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A (disambiguation)

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

131 relations: A, A (1965 film), A (1998 Japanese film), A (Agnetha Fältskog album), A (Ayumi Hamasaki album), A (band), A (Cass McCombs album), A (Cyrillic), A (Jethro Tull album), A (Jimmy Raney album), A (kana), A (Kannada film), A (musical note), A (New York City Subway service), A (Rainbow song), A (S-train), A (The Walking Dead), A (yacht), A band, A class, A Sharp (.NET), A Sharp (Axiom), A type, A value, A* search algorithm, A+ (programming language), A, A Novel, A-0 System, A-frame, A1, AA, AAA, AAAA, Absorbance, Acceleration, Adenine, Adenosine, Adsorption, Agilent Technologies, Alanine, Aleph (disambiguation), Alexander Pope, Alpha, Alpha (disambiguation), Alton Railroad, Ampere, Anarchist symbolism, Animaniacs, Anode, Area, ..., Argon, ATC code A, Attenuation coefficient, Atto-, Austria, Å (disambiguation), BASIC A+, Battery (vacuum tube), Blackboard bold, Blood type, Bohr radius, Brillouin zone, C/1760 A1, Canadian motion picture rating system, Central Board of Film Certification, Chemical affinity, Christian theology, Chroma (album), Class A, 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 (education), Gramophone record, 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, Naruto, Nicknames of Atlanta, Numerical digit, NZR A class, Open back unrounded vowel, Open front unrounded vowel, Out Campaign, Playing card, Pre-exponential factor, Pretty Little Liars, Pretty Little Liars (TV series), Reciprocal lattice, Relative atomic mass, Rigid rotor, Semi-major axis, 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. Expand index (81 more) »


A (named a, plural aes) is the 1st letter and the first vowel in 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 (Agnetha Fältskog album)

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

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A (Ayumi Hamasaki album)

No description.

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A (band)

A (later changed to A + R) are a British alternative rock band from Suffolk, England, that formed in 1993.

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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 (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)

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

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A (Kannada film)

A is a 1998 Indian Kannada language blockbuster psychological love story film written and directed by Upendra.

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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 (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 (The Walking Dead)

"A" is the sixteenth episode and fourth season finale of the post-apocalyptic horror television series The Walking Dead.

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A (yacht)

M/Y A is a luxury motor yacht designed by Philippe Starck and Martin Francis, and constructed by Blohm + Voss at the HDW shipyard in Kiel, Germany.

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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 Sharp (.NET)

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

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A Sharp (Axiom)

A♯ (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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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


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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 (1928–1987) published by Grove Press.

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A-0 System

The A-0 system (Arithmetic Language version 0), written by Grace Hopper in 1951 and 1952 for the UNIVAC I, was the first compiler ever developed for an electronic computer.

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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 may refer to.

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AAA, 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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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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Acceleration, in physics, is the rate of change of velocity of an object.

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Adenine (A, Ade) is a nucleobase (a purine derivative) with a variety of roles in biochemistry including cellular respiration, in the form of both the energy-rich adenosine triphosphate (ATP) and the cofactors nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD).

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Adenosine (USAN, BAN) (brand names Adenocard, Adenocor, Adenic, Adenoco, Adeno-Jec, Adenoscan, Adenosin, Adrekar, Krenosin; former developmental code name SR-96225) is a purine nucleoside composed of a molecule of adenine attached to a ribose sugar molecule (ribofuranose) moiety via a β-N9-glycosidic bond.

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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 (abbreviated as Ala or A) is a non-polar α-amino acid, with the formula CH3CH(NH2)COOH.

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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 Α, lowercase α; Άλφα Álpha) is the first letter of the Greek alphabet.

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Alpha (disambiguation)

Alpha (Α or α) 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 (SI unit 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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Animaniacs is an American animated television series, distributed by Warner Bros. Television and produced by Amblin Entertainment and Warner Bros. Animation.

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An anode is an electrode through which conventional current flows 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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Austria (Österreich), officially the Republic of Austria (Republik Österreich), is a federal republic and a landlocked country of over 8.5 million people in Central Europe.

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Å (disambiguation)

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

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BASIC A+ was developed by Optimized Systems Software of Cupertino, California, USA, 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 devices (such as radios) were powered by batteries.

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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 or absence of inherited antigenic substances on the surface of red blood cells (RBCs).

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Bohr radius

The Bohr radius (a0) is a physical constant, approximately equal to the most probable distance between the proton and 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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C/1760 A1

The Great Comet of 1760 (C/1760 A1) was first seen on 7 January 1760 by Abbe Chevalier at Lisbon.

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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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Central Board of Film Certification

The Central Board of Film Certification (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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Christian theology

Christian theology is the study 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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Class A

Class A may refer to.

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Crystal structure

In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid.

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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 (b. 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 technique for studying materials with unpaired electrons.

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English articles

Articles in English 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 (education)

Grading in education is the process of applying standardized measurements of varying levels of achievement in a course.

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Gramophone record

A gramophone record (phonograph record in American English) or vinyl record, commonly known as a "record", is an analog sound storage medium in the form of a flat polyvinyl chloride (previously shellac) disc with an inscribed, modulated spiral groove.

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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 a 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 of atoms per unit volume in two interacting bodies 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)

In human genetics, Haplogroup A is the 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.

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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 (born Isaak Yudovich Ozimov; circa January 2, 1920 – April 6, 1992) was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books.

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ISO 216

ISO 216 specifies international standard (ISO) paper sizes used in most countries in the world today.

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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, A, (often simply called the vector potential) and the magnetic scalar potential, ψ. Both quantities can be used in certain circumstances to calculate the magnetic field.

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Mass number

The mass number (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus.

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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 of the double exponential function is a prime number, for all positive integers 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 the names to be given to Swedish children.

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

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Nicknames of Atlanta

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 digit is a numeric symbol (such as "2" or "5") used in combinations (such as "25") to represent numbers (such as the number 25) in 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 most spoken languages. According to the official standards of the International Phonetic Association, the symbol in the International Phonetic Alphabet that represents this sound is. In practice, however, it is very common to approximate this sound with (officially a ''near-open'' (near-low) front unrounded vowel), and to use as an open (low) ''central'' unrounded vowel. This is the normal 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. See open central unrounded vowel for more information. If one needs to specify that the vowel is front, they can use symbols like (with "advanced" diactric), or (lowered), with the latter being more common. The Hamont dialect of Limburgish has been reported to contrast 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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Playing card

A playing card is a piece of specially prepared heavy paper, thin cardboard, plastic-coated paper, cotton-paper blend, or thin plastic, marked with distinguishing motifs and used as one of a set for playing card games.

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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 a series of young-adult novels by Sara Shepard.

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Pretty Little Liars (TV series)

Pretty Little Liars is an American teen drama mystery–thriller television series loosely based on the popular book series of the same title, written by Sara Shepard.

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Reciprocal lattice

In physics, the reciprocal lattice of a lattice (usually a Bravais lattice) is the lattice in which the Fourier transform of the spatial wavefunction of the original lattice (or direct lattice) is represented.

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Relative atomic mass

Relative atomic mass (symbol: A) is a dimensionless physical quantity, the ratio of the average mass of atoms of an element (from a single given sample or source) to of the mass of an atom of carbon-12 (known as the 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 axis

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 which is the total surface area of a material per unit of mass, solid or bulk volume, or cross-sectional area.

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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 is an 1850 work of fiction in a historical setting, written by Nathaniel Hawthorne, and is considered to be his magnum opus.

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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 a) 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 is a thermodynamic equation describing gases and liquids (fluids) under a given set of pressure (P), volume (V), and temperature (T) conditions (i.e., it is a thermodynamic equation of state).

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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, and beta-carotene.

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Web Content Accessibility Guidelines

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

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