X and X (disambiguation)

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Difference between X and X (disambiguation)

X vs. X (disambiguation)

X (named ex, plural exes) is the 24th and antepenultimate letter in the modern English alphabet and the ISO basic Latin alphabet. X is the 24th letter of the Latin alphabet.

Cartesian coordinate system

A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length.

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Chi (letter)

Chi (uppercase Χ, lowercase χ; χῖ) is the 22nd letter of the Greek alphabet, pronounced or in English.

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Cross product

In mathematics and vector algebra, the cross product or vector product (occasionally directed area product to emphasize the geometric significance) is a binary operation on two vectors in three-dimensional space \left(\mathbb^3\right) and is denoted by the symbol \times.

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Kha (Cyrillic)

Kha or Ha (Х х; italics: Х х) is a letter of the Cyrillic script.

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Malcolm X

Malcolm X (19251965) was an African-American Muslim minister and human rights activist.

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Multiplication sign

The multiplication sign, also known as the times sign or the dimension sign, is the symbol ×. While similar to the lowercase letter x, the form is properly a rotationally symmetric saltire.

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Voiceless uvular fricative

The voiceless uvular fricative is a type of consonantal sound used in some spoken languages.

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Voiceless velar fricative

The voiceless velar fricative is a type of consonantal sound used in some spoken languages.

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X mark

An X mark (also known as a cross, x, ex and ex mark is a mark (x, ❌, X, ✕, ☓, ✖, ✗, ✘, etc.) used to indicate the concept of negation (for example "no, this has not been verified" or "no, I don't agree") as well as an indicator (for example in election ballot papers or in x marks the spot). Its opposite is often considered to be the check mark or tick (or the O mark used in Japan, Korea and Taiwan). In Japanese, the X mark (❌) is called "batsu" (ばつ) and can be expressed by someone by crossing their arms. In some countries such as France it is common for people to check a square box with a cross rather than a check mark, while in others the check mark (✓) or even a v mark is used. It is also used as a replacement for a signature for a person who is blind or illiterate and thus cannot write his or her name. Typically, the writing of an X used for this purpose must be witnessed to be valid. As a verb, to ex (or x, notably one of the shortest English words) off/out or to cross off/out means to add such a mark. It is quite common, especially on printed forms and document, for there to be squares in which to place x marks, or interchangeably checks. It is also traditionally used on maps to indicate locations, most famously on treasure maps.

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X Window System

The X Window System (X11, or shortened to simply X) is a windowing system for bitmap displays, common on UNIX-like computer operating systems.

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X-ray

X-rays make up X-radiation, a form of electromagnetic radiation.

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XX

X X or xx may refer to.

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XXX

XXX may refer to.

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XXXX

XXXX may refer to.

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