X

See also Appendix:Variations of "x"

Translingual

Unicode name	LATIN CAPITAL LETTER X
Codepoint	U+0058
W ← Basic Latin → Y

Wikipedia

Etymology 1

Letter

X upper case (lower case x)

1. The twenty-fourth letter of the basic modern Latin alphabet.

See also

• (Latin script):  Aa  Bb  Cc  Dd  Ee  Ff  Gg  Hh  Ii  Jj  Kk  Ll  Mm  Nn  Oo  Pp  Qq  Rr  Ss  Tt  Uu  Vv  Ww  Xx  Yy  Zz
• (Variations of letter X):  Ẍẍ  Ẋẋ  ᶍ  Ｘｘ

Cardinal number

Roman numeral
X
	Previous:	IX
	Next:	XI

X

1. (Roman numerals) The number 10.

Symbol

X

1. A symbol of the IPA, representing a voiceless uvular fricative.
2. (bowling) strike

Etymology 2

Possibly from skull and crossbones

Symbol

X

1. A hazard indicator, sometimes incorporated into standard labelling and signage systems

Derived terms

• XXX

See also

Other representations of X:

NATO phonetic: X-ray Morse code: –··– Braille: ⠭ ASL Manual: X

Signal flag:

Semaphore:

• Letter styles
• 

  Capital and lowercase versions of X, in normal and italic type

• 

  Uppercase and lowercase X in Fraktur

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English

Pronunciation

• IPA: /ɛks/, X-SAMPA: /Eks/
• Rhymes: -ɛks

Etymology 1

Cardinal number

X

1. An unknown quantity or unknown value.

Translations

X

• Arabic: س (ar) (siin) (unknown variable)
• French: X (fr)

• Russian: X (ru) (iks)

Etymology 2

Pronunciation

• IPA: /ks/, IPA: /ɡz/, or at the beginning of words IPA: /z/.

Letter

X uppercase (lowercase x)

1. The twenty-fourth letter of the English alphabet, called ex and written in the Latin script.

See also

• (Latin script letters) letter; Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, Jj, Kk, Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Tt, Uu, Vv, Ww, Xx, Yy, Zz

Noun

X

1. Any mark that looks like that letter, such as such a mark made by a person who cannot read or write, in lieu of a signature.
2. (lacrosse) The spot behind the goal.

Derived terms

• (signature mark): xoxo

Etymology 3

Presumably by abbreviation of the pronunciation of ecstasy.

Noun

X (uncountable)

1. (slang) Ecstasy, a particular street drug.

Etymology 4

Adjective

X (not comparable)

1. (Former UK film certificate) Suitable only for those aged 16 or (later) 18 years and over.
2. (movie rating) Obscene.

Translations

X

• French: X (fr)

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.

Translations to be checked

• Spanish: equis

Etymology 5

From Christ by abbreviation, from Ancient Greek Χ (Ch, “(letter chi)”), from Χριστός (Christós, “Christ”).

Abbreviation

X (plural Xs)

1. (informal) Christ

Derived terms

• Xianity
• Xmas
• Xtopher (rare)

Etymology 6

Sign reading “Pedestrian X” (Pedestrian Crossing)

From cross, due to the X symbol being a cross saltire.

Abbreviation

X (plural Xes)

1. (North America) cross, crossing
2. intersex or transgender (passports and identification documents)

Derived terms

• xing

Etymology 7

As defined in CIE 1931 color space.

Noun

X (uncountable)

1. One of the tristimulus values which, with Y and Z, defines coordinates in a three-dimensional color space. Pronounced big X or cap X.
   • 2003, Charles A. Poynton, Digital Video and HDTV: Algorithms and Interfaces, ISBN 9781558607927, p. 217:

     X, Y and Z are pronounced big-X, big-Y, and big-Z, or cap-X, cap-Y, and cap-Z, to distinguish them from little x and little y, to be described in a moment.

Derived terms

• X marks the spot
• XXX
• XXXX

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American Sign Language

Letter

(Stokoe X)

1. The letter X

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Azeri

Letter

X upper case (lower case x)

1. The twelfth letter of the Azeri alphabet, written in the Latin script.

See also

• (Latin script letters) hərf; Aa, Bb, Cc, Çç, Dd, Ee, Əə, Ff, Gg, Ğğ, Hh, Xx, Iı, İi, Jj, Kk, Qq, Ll, Mm, Nn, Oo, Öö, Pp, Rr, Ss, Şş, Tt, Uu, Üü, Vv, Yy, Zz

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Dutch

Pronunciation

• (letter name): IPA: /ɪks/

Letter

X (capital, lowercase x)

1. The twenty-fourth letter of the Dutch alphabet.

See also

• Previous letter: W
• Next letter: Y

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Esperanto

Abbreviation

X

1. (text messaging) Abbreviation of aŭ (“or”).

See also

• -X

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Finnish

Letter

X upper case (lower case x)

1. The twenty-third letter of the Finnish alphabet, called äks or eks and written in the Latin script.

Usage notes

• Used only in loanwords. In more established loanwords replaced with ks.

See also

• (Latin script letters) letter; Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, Jj, Kk, Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Šš, Tt, Uu, Vv, Ww, Xx, Yy, Zz, Žž, Åå, Ää, Öö

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French

Wikipedia ^fr

Pronunciation

• IPA: /iks/, X-SAMPA: /iks/

Adjective

X m, f (invariable)

1. X-rated

Noun

X m and f (invariable)

1. X (letter of the Latin alphabet)
2. X-frame stool
   • 1862, Victor Hugo, Les Misérables, I.3.i:

     La duchesse de Duras lisait à trois ou quatre amis, dans son boudoir meublé d’X en satin bleu ciel [...].

     The Duchess de Duras was reading to two or three friends, in a boudoir furnished with X-frame stools in sky-blue satin.

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German

Pronunciation

• IPA: /ʔɪks/

Letter

X (upper case, lower case x)

1. The twenty-fourth letter of the German alphabet.

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Italian

Wikipedia ^it

Pronunciation

• (name of letter) IPA: /iks/
• (phonetic realization) IPA: [ks]

Letter

X m, f (invariable, lower case x)

1. The twenty-fourth letter of the Latin alphabet, called ics in Italian.

Usage notes

• The letter X is not considered part of the Italian alphabet. It is found mainly in loanwords, Latinisms, and Grecisms.

See also

• (Latin script letters) lettera; Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, (Jj), (Kk), Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Tt, Uu, Vv, (Ww), (Xx), (Yy), Zz
• Italian alphabet on Wikipedia.Wikipedia:Italian alphabet

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Malay

Wikipedia ^ms

Pronunciation

• (Name of letter) IPA: [ɛk̚s]
• (Phoneme, Syllable initial) IPA: [z]
• (Phoneme, Syllable final) IPA: [k̚s]

Letter

X

1. The twenty-fourth letter of the Malay alphabet, written in the Latin script.

See also

• (Latin script letters) Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, Jj, Kk, Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Tt, Uu, Vv, Ww, Xx, Yy, Zz

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Romanian

Pronunciation

• IPA: /iks/

Letter

X (capital, lowercase x)

1. The twenty-fifth letter of the Romanian alphabet representing the double-consonant sounds /gz/ and /ks/. Preceded by V and followed by Z.

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Somali

Pronunciation

• (phoneme): IPA: /ħ/
• (letter name): IPA: /ħɑ/

Letter

X upper case (lower case x)

1. The fifth letter of the Somali alphabet, called xa and written in the Latin script.

Usage notes

1. The fifth letter of the Somali alphabet, which follows Arabic abjad order. It is preceded by J and followed by KH.

See also

• (Latin script letters) '', Bb, Tt, Jj, Xx, KHkh, Dd, Rr, Ss, SHsh, DHdh, Cc, Gg, Ff, Qq, Kk, Ll, Mm, Nn, Ww, Hh, Yy, Aa, Ee, Ii, Oo, Uu

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Spanish

Pronunciation

• IPA: /ekis/

Letter

X (upper case, lower case x)

1. The 25th letter of the Spanish alphabet.