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A (disambiguation)

Index A (disambiguation)

A is the first letter of the Latin alphabet. [1]

142 relations: A, A (1965 film), A (1998 Japanese film), A (1998 Kannada film), A (Agnetha Fältskog album), A (Ayumi Hamasaki EP), A (band), A (Big Bang single), A (Cass McCombs album), A (cuneiform), A (Cyrillic), A (Jethro Tull album), A (Jimmy Raney album), A (kana), A (motor yacht), A (musical note), A (New York City Subway service), A (Pretty Little Liars), A (Rainbow song), A (S-train), A (sailing yacht), A (The Walking Dead), A band, A class, A major, A Martinez, A minor, A Sharp (.NET), A type, A value, A* search algorithm, A+ (programming language), A, A Novel, A-0 System, A-frame, A1, AA, AAA, AAAA, A♯ (Axiom), Absorbance, Acceleration, Ace, Adenine, Adenosine, Adsorption, Agilent Technologies, Alanine, Aleph (disambiguation), Alexander Pope, ..., Alpha, Alpha (disambiguation), Alton Railroad, Ampere, Anarchist symbolism, Anode, Area, Argon, ATC code A, Attenuation coefficient, Atto-, Å (disambiguation), BASIC A+, Battery (vacuum tube), Bengali alphabet, Blackboard bold, Blood type, Bohr radius, Brillouin zone, Canadian motion picture rating system, Categorical proposition, Central Board of Film Certification, Chemical affinity, Chord names and symbols (popular music), Christian theology, Chroma (album), Circled-a, Class A, Common year starting on Sunday, Crystal structure, CTV Two, Darren Almond, Denki Groove, Electron paramagnetic resonance, English articles, Ford Model A (1903–04), Ford Model A (1927–31), Gain (electronics), Glaisher–Kinkelin constant, Grading systems by country, Hall effect, Hamaker constant, Haplogroup A (mtDNA), Haplogroup A (Y-DNA), Helmholtz free energy, History of British film certificates, Isaac Asimov, ISO 216, Latin, Line A (Prague Metro), List of Dance Dance Revolution songs, List of DNS record types, List of glossing abbreviations, Louis Zukofsky, Magnetic potential, Mass number, Matthew Arnold, Maybe You Should Drive, Mills' constant, Minor League Baseball, Model A, Naming law in Sweden, Naming of comets, Naruto, Nicknames of Atlanta, Numerical digit, NZR A class, Open back unrounded vowel, Open front unrounded vowel, Out Campaign, Phonograph record, Pre-exponential factor, Pretty Little Liars, Princess Principal, Reciprocal lattice, Relative atomic mass, Rigid rotor, Semi-major and semi-minor axes, Sentinel Peak (Arizona), Specific surface area, Stellar classification, The Scarlet Letter, Thermal diffusivity, Thermionic emission, Thermodynamic activity, Universal quantification, Van der Waals equation, Vehicle registration plates of the European Union, Vitamin A, Web Content Accessibility Guidelines, Year, 4chan. Expand index (92 more) »


A (named, plural As, A's, as, a's or aes) is the first letter and the first vowel of the ISO basic Latin alphabet.

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A (1965 film)

A is a 1965 short film animated by Jan Lenica.

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A (1998 Japanese film)

A is a 1998 Japanese documentary film about the Aum Shinrikyo cult following the arrest of its leaders for instigating the sarin gas attack on the Tokyo subway in 1995.

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A (1998 Kannada film)

A is a 1998 Indian Kannada-language psychological romance film written and directed by Upendra.

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A (Agnetha Fältskog album)

A is the fifth English-language studio album by Swedish singer Agnetha Fältskog, formerly a member of the group ABBA.

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A (Ayumi Hamasaki EP)

A (stylized as) is an extended play (EP) by Japanese recording artist Ayumi Hamasaki.

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A (band)

A are a British alternative rock band from Suffolk, England, which formed in 1993.

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A (Big Bang single)

"A" is the fifth single album by South Korean band Big Bang, and the second from their MADE Series.

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A (Cass McCombs album)

A is the debut album by Cass McCombs and was released on May 20, 2003 on Monitor Records.

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A (cuneiform)

In Line 2, "um-ma", "message (thus)"...

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A (Cyrillic)

A (А а; italics: А а) is a letter of the Cyrillic script.

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A (Jethro Tull album)

A is the 13th studio album by Jethro Tull.

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A (Jimmy Raney album)

A is an album by guitarist Jimmy Raney recorded at three separate sessions between 1954 and 1955 and released on the Prestige label.

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A (kana)

あ in hiragana or ア in katakana (romanised a) is one of the Japanese kana that each represent one mora.

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A (motor yacht)

M/Y A is a luxury motor yacht designed by Philippe Starck and engineered by naval architect Martin Francis, She was built by the Blohm + Voss shipyard at the HDW deepwater facility in Kiel.

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A (musical note)

La or A is the sixth note of the fixed-do solfège.

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A (New York City Subway service)

The A Eighth Avenue Express is a rapid transit service in the B Division of the New York City Subway.

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A (Pretty Little Liars)

"A" is a fictional character created in 2006 by author Sara Shepard.

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A (Rainbow song)

"A" is a song by South Korean girl group Rainbow.

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A (S-train)

A is a service on the S-train network in Copenhagen.

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A (sailing yacht)

Sailing yacht A is a sailing yacht launched in 2015.

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A (The Walking Dead)

"A" is the sixteenth and final episode of the fourth season, and 51st episode overall of the post-apocalyptic horror television series The Walking Dead, which aired on AMC on March 30, 2014.

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A band

A band may refer to.

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A class

A class or A-class may refer to.

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A major

A major (or the key of A) is a major scale based on A, with the pitches A, B, sharp, D, E, sharp, and sharp.

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A Martinez

Adolfo Larrue Martínez III (born September 27, 1948), better known as A Martinez, is an American actor and singer with roles in the daytime soap operas Santa Barbara, General Hospital, One Life to Live, The Bold and the Beautiful, and Days of Our Lives, and the primetime dramas L.A. Law, Profiler, and Longmire.

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A minor

A minor is a minor scale based on A, with the pitches A, B, C, D, E, F, and G. Its key signature has no flats and no sharps.

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A Sharp (.NET)

A# is a port of the Ada programming language to the Microsoft.NET platform.

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A type

A type or type A may refer to.

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A value

The A-value for a methyl group is 1.74 as derived from the chemical equilibrium above. This means it costs 1.74 kcal/mol of energy to have a methyl group in the axial position compared to the equatorial position. A-Values are numerical values used in the determination of the most stable orientation of atoms in a molecule (Conformational Analysis), as well as a general representation of steric bulk.

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A* search algorithm

In computer science, A* (pronounced as "A star") is a computer algorithm that is widely used in pathfinding and graph traversal, which is the process of plotting an efficiently directed path between multiple points, called "nodes".

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A+ (programming language)

A+ is an array programming language descendent from the programming language A, which in turn was created to replace APL in 1988.

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A, A Novel

a, A Novel is a 1968 book by the American artist Andy Warhol published by Grove Press.

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A-0 System

The A-0 system (Arithmetic Language version 0), written by Richard K. Ridgway (managed by Grace Hopper) in 1951 and 1952 for the UNIVAC I, was an early compiler related tool developed for electronic computers.

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An A-frame is a basic structure designed to bear a load in a lightweight economical manner.

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A1, A-1 or A.1.may refer to.

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AA or Aa may refer to.

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AAA, Triple A, or Triple-A is a three-letter initialism or abbreviation, and may refer to.

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AAAA may refer to.

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A♯ (Axiom)

A♯ (pronounced: A sharp) is an object-oriented functional programming language distributed as a separable component of Version 2 of the Axiom computer algebra system.

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In chemistry, absorbance or decadic absorbance is the common logarithm of the ratio of incident to transmitted radiant power through a material, and spectral absorbance or spectral decadic absorbance is the common logarithm of the ratio of incident to transmitted spectral radiant power through a material.

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In physics, acceleration is the rate of change of velocity of an object with respect to time.

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An ace is a playing card, die or domino with a single pip.

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Adenine (A, Ade) is a nucleobase (a purine derivative).

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Adenosine is both a chemical found in many living systems and a medication.

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Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface.

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Agilent Technologies

Agilent Technologies is an American public research, development and manufacturing company established in 1999 as a spin-off from Hewlett-Packard.

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Alanine (symbol Ala or A) is an α-amino acid that is used in the biosynthesis of proteins.

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Aleph (disambiguation)

Aleph is the first letter of many Semitic abjads (alphabets).

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Alexander Pope

Alexander Pope (21 May 1688 – 30 May 1744) was an 18th-century English poet.

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Alpha (uppercase, lowercase; ἄλφα, álpha, modern pronunciation álfa) is the first letter of the Greek alphabet.

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Alpha (disambiguation)

Alpha is the first letter of the Greek alphabet.

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Alton Railroad

The Alton Railroad was the final name of a railroad linking Chicago to Alton, Illinois, St. Louis, Missouri, and Kansas City, Missouri.

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The ampere (symbol: A), often shortened to "amp",SI supports only the use of symbols and deprecates the use of abbreviations for units.

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Anarchist symbolism

Anarchists have employed certain symbols for their cause, including most prominently the circle-A (Ⓐ) and the black flag (⚑), although anarchists have historically largely denied the importance of symbols to political movement.

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An anode is an electrode through which the conventional current enters into a polarized electrical device.

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Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane.

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Argon is a chemical element with symbol Ar and atomic number 18.

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ATC code A


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Attenuation coefficient

Attenuation coefficient or narrow beam attenuation coefficient of the volume of a material characterizes how easily it can be penetrated by a beam of light, sound, particles, or other energy or matter.

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Atto (symbol a) is a unit prefix in the metric system denoting a factor of 10−18 or.

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Å (disambiguation)

Å (historically Aa) is a letter used in several Scandinavian, High German, and Finno-Permic languages.

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BASIC A+ was developed by Optimized Systems Software of Cupertino, California, United States, to provide the Atari 8-bit family with an extended BASIC compatible with, but faster than, the simpler ROM-based Atari BASIC.

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Battery (vacuum tube)

In the early days of electronics, vacuum tube (called valves in British contexts) devices (such as radios) were powered by batteries.

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Bengali alphabet

The Bengali alphabet or Bangla alphabet (বাংলা বর্ণমালা, bangla bôrnômala) or Bengali script (বাংলা লিপি, bangla lipi) is the writing system for the Bengali language and, together with the Assamese alphabet, is the fifth most widely used writing system in the world.

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Blackboard bold

Blackboard bold is a typeface style that is often used for certain symbols in mathematical texts, in which certain lines of the symbol (usually vertical or near-vertical lines) are doubled.

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Blood type

A blood type (also called a blood group) is a classification of blood based on the presence and absence of antibodies and also based on the presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs).

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Bohr radius

The Bohr radius (a0 or rBohr) is a physical constant, approximately equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state.

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Brillouin zone

In mathematics and solid state physics, the first Brillouin zone is a uniquely defined primitive cell in reciprocal space.

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Canadian motion picture rating system

Motion picture ratings in Canada are mostly a provincial responsibility, and each province has its own legislation regarding exhibition and admission.

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Categorical proposition

In logic, a categorical proposition, or categorical statement, is a proposition that asserts or denies that all or some of the members of one category (the subject term) are included in another (the predicate term).

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Central Board of Film Certification

The Central Board of Film Certification (CBFC) (often referred to as the Censor Board) is a statutory censorship and classification body under the Ministry of Information and Broadcasting, Government of India.

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Chemical affinity

In chemical physics and physical chemistry, chemical affinity is the electronic property by which dissimilar chemical species are capable of forming chemical compounds.

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Chord names and symbols (popular music)

Musicians use various kinds of chord names and symbols in different contexts, to represent musical chords.

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Christian theology

Christian theology is the theology of Christian belief and practice.

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Chroma (album)

Chroma is the debut studio album by the American rock band Cartel.

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Circled-a, @, Ⓐ, (A), or variation may refer to.

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Class A

Class A may refer to.

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Common year starting on Sunday

A common year starting on Sunday is any non-leap year (i.e. a year with 365 days) that begins on Sunday, 1 January, and ends on Sunday, 31 December.

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Crystal structure

In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.

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CTV Two (also known as "CTV 2") is a Canadian English language television system that is owned by the Bell Media subsidiary of Bell Canada.

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Darren Almond

Darren James Almond (born August 1971, Appley Bridge, Lancashire) is an English artist, based in London.

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Denki Groove

is a Japanese synthpop group founded in 1989.

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Electron paramagnetic resonance

Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscopy is a method for studying materials with unpaired electrons.

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English articles

Articles in the English language are the definite article the and the indefinite articles a and an.

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Ford Model A (1903–04)

The original Ford Model A is the first car produced by Ford, beginning production in 1903.

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Ford Model A (1927–31)

The Ford Model A (also colloquially called the A-Model Ford or the A, and A-bone among rodders and customizers), was the second huge success for the Ford Motor Company, after its predecessor, the Model T. First produced on October 20, 1927, but not sold until December 2, it replaced the venerable Model T, which had been produced for 18 years.

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Gain (electronics)

In electronics, gain is a measure of the ability of a two-port circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output port by adding energy converted from some power supply to the signal.

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Glaisher–Kinkelin constant

In mathematics, the Glaisher–Kinkelin constant or Glaisher's constant, typically denoted A, is a mathematical constant, related to the K-function and the Barnes G-function.

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Grading systems by country

This is a list of grading systems used by countries of the world, first organized by continent, with links to specifics in many entries.

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Hall effect

The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current.

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Hamaker constant

The Hamaker constant A can be defined for a Van der Waals (VdW) body–body interaction: where \rho_1 and \rho_2 are the number densities of the two interacting kinds of particles, and C is the coefficient in the particle–particle pair interaction.

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Haplogroup A (mtDNA)

In human mitochondrial genetics, Haplogroup A is a human mitochondrial DNA (mtDNA) haplogroup.

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Haplogroup A (Y-DNA)

Haplogroup A is a human Y-chromosome DNA haplogroup.

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Helmholtz free energy

In thermodynamics, the Helmholtz free energy is a thermodynamic potential that measures the useful work obtainable from a closed thermodynamic system at a constant temperature and volume.

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History of British film certificates

This article chronicles the history of British film certificates.

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Isaac Asimov

Isaac Asimov (January 2, 1920 – April 6, 1992) was an American writer and professor of biochemistry at Boston University.

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ISO 216

ISO 216 specifies international standard (ISO) paper sizes used in most countries in the world today, although not in Canada, the United States, Mexico, or the Dominican Republic.

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Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.

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Line A (Prague Metro)

Line A is a line of the Prague Metro, serving the Czech capital.

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List of Dance Dance Revolution songs

The following is a list of songs in the Dance Dance Revolution series of games.

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List of DNS record types

This list of DNS record types is an overview of resource records (RRs) permissible in zone files of the Domain Name System (DNS).

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List of glossing abbreviations

This page lists common abbreviations for grammatical terms that are used in linguistic interlinear glossing.

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Louis Zukofsky

Louis Zukofsky (January 23, 1904 – May 12, 1978) was an American poet.

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Magnetic potential

The term magnetic potential can be used for either of two quantities in classical electromagnetism: the magnetic vector potential, or simply vector potential, A; and the magnetic scalar potential ψ. Both quantities can be used in certain circumstances to calculate the magnetic field B. The more frequently used magnetic vector potential is defined so that its curl is equal to the magnetic field: curl A.

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Mass number

The mass number (symbol A, from the German word Atomgewichte (atomic weight), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It determines the atomic mass of atoms. Because protons and neutrons both are baryons, the mass number A is identical with the baryon number B as of the nucleus as of the whole atom or ion. The mass number is different for each different isotope of a chemical element. This is not the same as the atomic number (Z) which denotes the number of protons in a nucleus, and thus uniquely identifies an element. Hence, the difference between the mass number and the atomic number gives the number of neutrons (N) in a given nucleus:. The mass number is written either after the element name or as a superscript to the left of an element's symbol. For example, the most common isotope of carbon is carbon-12, or, which has 6 protons and 6 neutrons. The full isotope symbol would also have the atomic number (Z) as a subscript to the left of the element symbol directly below the mass number:. This is technically redundant, as each element is defined by its atomic number, so it is often omitted.

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Matthew Arnold

Matthew Arnold (24 December 1822 – 15 April 1888) was an English poet and cultural critic who worked as an inspector of schools.

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Maybe You Should Drive

Maybe You Should Drive (commonly abbreviated MYSD) is the second studio album by Barenaked Ladies.

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Mills' constant

In number theory, Mills' constant is defined as the smallest positive real number A such that the floor function of the double exponential function is a prime number, for all natural numbers n. This constant is named after William H. Mills who proved in 1947 the existence of A based on results of Guido Hoheisel and Albert Ingham on the prime gaps.

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Minor League Baseball

Minor League Baseball is a hierarchy of professional baseball leagues in the Americas that compete at levels below Major League Baseball (MLB) and provide opportunities for player development and a way to prepare for the major leagues.

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Model A

Model A may refer to.

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Naming law in Sweden

The naming law in Sweden (Namnlagen) is a Swedish law which requires approval of the government agency for names to be given to Swedish children.

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Naming of comets

Comets have been observed for the last 2,000 years.

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is a Japanese manga series written and illustrated by Masashi Kishimoto.

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Nicknames of Atlanta

The City of Love An 1859 industrial journal was among the first to note nicknames for Atlanta, Georgia:An orator claimed for it the signification of "a city among the hills" while a writer has declared that it was the opposite of "rus in urbe" ("country in the city") and proclaimed it "'the city in the woods".

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Numerical digit

A numerical digit is a single symbol (such as "2" or "5") used alone, or in combinations (such as "25"), to represent numbers (such as the number 25) according to some positional numeral systems.

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NZR A class

NZR A class may refer to.

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Open back unrounded vowel

The open back unrounded vowel, or low back unrounded vowel, is a type of vowel sound, used in some spoken languages.

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Open front unrounded vowel

The open front unrounded vowel, or low front unrounded vowel, is a type of vowel sound, used in some spoken languages. It is one of the eight primary cardinal vowels, not directly intended to correspond to a vowel sound of a specific language but rather to serve as a fundamental reference point in a phonetic measuring system. The symbol in the International Phonetic Alphabet (IPA) that represents this sound is, and in the IPA vowel chart it is positioned at the lower-left corner. However, the accuracy of the quadrilateral vowel chart is disputed, and the sound has been analyzed acoustically as an extra-open/low unrounded vowel at a position where the front/back distinction has lost its significance. There are also differing interpretations of the exact quality of the vowel: the classic sound recording of by Daniel Jones is slightly more front but not quite as open as that by John Wells. In practice, it is considered normal by many phoneticians to use the symbol for an open ''central'' unrounded vowel and instead approximate the open front unrounded vowel with (which officially signifies a ''near-open'' front unrounded vowel). This is the usual practice, for example, in the historical study of the English language. The loss of separate symbols for open and near-open front vowels is usually considered unproblematic, because the perceptual difference between the two is quite small, and very few languages contrast the two. If one needs to specify that the vowel is front, one can use symbols like (advanced/fronted), or (lowered), with the latter being more common. The Hamont dialect of Limburgish has been reported to contrast long open front, central and back unrounded vowels, which is extremely unusual.

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Out Campaign

The Out Campaign is a public awareness initiative for freethought and atheism.

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Phonograph record

A phonograph record (also known as a gramophone record, especially in British English, or record) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.

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Pre-exponential factor

In chemical kinetics, the pre-exponential factor or A factor is the pre-exponential constant in the Arrhenius equation, an empirical relationship between temperature and rate coefficient.

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Pretty Little Liars

Pretty Little Liars is an American teen drama mystery thriller television series developed by I. Marlene King and is loosely based on the novel series of the same name written by Sara Shepard.

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Princess Principal

is a Japanese anime television series produced by Studio 3Hz and Actas.

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Reciprocal lattice

In physics, the reciprocal lattice represents the Fourier transform of another lattice (usually a Bravais lattice).

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Relative atomic mass

Relative atomic mass (symbol: A) or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to one unified atomic mass unit.

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Rigid rotor

The rigid rotor is a mechanical model that is used to explain rotating systems.

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Semi-major and semi-minor axes

In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the widest points of the perimeter.

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Sentinel Peak (Arizona)

Sentinel Peak is a 2,897 ft (883 m) peak in the Tucson Mountains southwest of downtown Tucson, Arizona.

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Specific surface area

Specific surface area (SSA) is a property of solids defined as the total surface area of a material per unit of mass, (with units of m2/kg or m2/g) or solid or bulk volume (units of m2/m3 or m−1).

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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The Scarlet Letter

The Scarlet Letter: A Romance, an 1850 novel, is a work of historical fiction written by American author Nathaniel Hawthorne.

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Thermal diffusivity

In heat transfer analysis, thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure.

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Thermionic emission

Thermionic emission is the thermally induced flow of charge carriers from a surface or over a potential-energy barrier.

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Thermodynamic activity

In chemical thermodynamics, activity (symbol) is a measure of the "effective concentration" of a species in a mixture, in the sense that the species' chemical potential depends on the activity of a real solution in the same way that it would depend on concentration for an ideal solution.

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Universal quantification

In predicate logic, a universal quantification is a type of quantifier, a logical constant which is interpreted as "given any" or "for all".

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Van der Waals equation

The van der Waals equation (or van der Waals equation of state; named after Johannes Diderik van der Waals) is based on plausible reasons that real gases do not follow the ideal gas law.

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Vehicle registration plates of the European Union

Vehicle registration plates of the European Union are the mandatory number plates used to display the registration mark of a vehicle in the respective Member States.

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Vitamin A

Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene).

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Web Content Accessibility Guidelines

The Web Content Accessibility Guidelines (WCAG) are part of a series of web accessibility guidelines published by the Web Accessibility Initiative (WAI) of the World Wide Web Consortium (W3C), the main international standards organization for the Internet.

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A year is the orbital period of the Earth moving in its orbit around the Sun.

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4chan is an English-language imageboard website.

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Redirects here:

A (1998 film), A (album), A (film), A (song), A (symbol).


[1] https://en.wikipedia.org/wiki/A_(disambiguation)

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