X

• x (numeral)
• X. (numeral, ordinal number)

From the Etruscan letter 𐌗 (x, “ex”), from the Ancient Greek letter Χ (Kh, “chi”), created ex nihilo.

X (lower case x)

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

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

X

1. Roman numeral ten (10)
2. (especially in the names of aristocracy) the tenth.

• x, VV, vv

• OS X
• Sol X

X

1. (bowling) strike

   Coordinate term: / (spare)

2. (sports) fail

   Coordinate terms: O (success), - (skip)

3. One of the tristimulus values which, with Y and Z, defines coordinates in a three-dimensional color space. Pronounced (in English) big X or cap X.
   • 2003, Charles A. Poynton, Digital Video and HDTV: Algorithms and Interfaces (in English), →ISBN, page 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.

4. A placeholder for any letter or word.
5. (linguistics) A wildcard for any sound (consonant, vowel or tone).
6. (international standards) Substituted for the third letter of a currency code to denote the minor unit of that currency.
7. (chemistry) halogen

Possibly from skull and crossbones.

X

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

• XXX

• Letter styles
• 
  Uppercase and lowercase versions of X, in normal and italic type
• 
  Uppercase and lowercase X in Fraktur

Character=X

Other representations of X:

• (letter name) IPA^(key): /ɛks/

• Audio (US)

  (file)

• (phoneme)
  • IPA^(key): /ks/, /ɡz/, /kʃ/, /ɡʒ/
  • IPA^(key): /z/, /ʃ/ (word-initially)
• Rhymes: -ɛks
• Homophone: Exe

Introduced by René Descartes in the context of mathematical notation, but has since widened to other contexts.

X

1. An unknown quantity or unknown value.

   Let x represent the forecast traffic flow in 20 years’ time.

X

1. A placeholder for an unknown, suppressed or hypothetical name.

   The woman known until now as Witness X has been unmasked after a court ruling.

   Suppose that Mr and Mrs X have been married for many years.

2. (anthroponymy, politics) A surname, used by those who have had their identity or heritage, including their proper ancestral names, erased or forgotten.

   Malcolm X

X (upper case, lower case x, plural Xs or X's)

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

• (Latin-script letters) letter; A a, B b, C c, D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s, T t, U u, V v, W w, X x, Y y, Z z

X

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

• (cross mark): X marks the spot, X out, XXX
• (signature mark): XO, xo, XOXO, xoxo

X (not comparable)

1. Intersex or non-binary (in passports and identification documents).

   Coordinate terms: M, F

Presumably by abbreviation of the pronunciation of ecstasy.

X (uncountable)

1. (slang) Ecstasy, a particular street drug.
   • 2003 January 7, “In da Club” (track 5), in Get Rich or Die Tryin', performed by 50 Cent:

     You can find me in the club, bottle full of bub'. Look, mami, I got the X if you into takin' drugs.

   • 2008, Stephen King, Graduation Weekend:

     Tonight the kids will go out and party down in a more righteous mode. Alcohol and not a few tabs of X will be ingested. Club music will throb through big speakers.

   • 2018 June 8, “Love Druggie”‎performed by Mendoza:

     I'm a love druggie falling for these drug junkies. Come n call on me besides these X parties. It's fucking hard on my body.

X (not comparable)

1. (British film certificate, dated) Suitable only for those aged 16 or (later) 18 years and over.
2. (movie rating) Obscene.
   • 1976, Movie Maker, volume 10, numbers 1-6, page 364:

     If you go to an X movie you do so knowingly, as does everyone else in the audience. Or if the same thing comes up on TV you can switch over, or, if you wish, enjoy it in relative privacy.

From Christ by abbreviation, orthographic borrowing from Ancient Greek Χ (Kh, letter chi), from Χριστός (Khristós, “Christ”).

X

1. (informal) Christ

Sign reading “Pedestrian X” (Pedestrian Crossing)

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

X (plural Xes)

1. (Canada, US) Cross, crossing.

• xing

X (comparative more X, superlative most X)

1. (informal) Abbreviation of extreme.

X

1. The eighth letter of the Afar alphabet, written in the Latin script.

• (Latin-script letters) A a, B b, T t, S s, E e, C c, K k, X x, I i, D d, Q q, R r, F f, G g, O o, L l, M m, N n, U u, W w, H h, Y y

• (letter name): IPA^(key): /ɛks/

X (upper case, lower case x)

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

• (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

X (plural X'e, diminutive X'ie)

1. X

IPA^(key): /d͡z/

X (upper case X, lower case x)

1. The thirty-second letter of the Albanian alphabet, written in the Latin script.

• (Latin-script letters) shkronjë; A a, B b, C c, Ç ç, D d, Dh dh, E e, Ë ë, F f, G g, Gj gj, H h, I i, J j, K k, L l, Ll ll, M m, N n, Nj nj, O o, P p, Q q, R r, Rr rr, S s, Sh sh, T t, Th th, U u, V v, X x, Xh xh, Y y, Z z, Zh zh
• (Arvanitic) (Greek script letters) Α α, Β β, Ƃ ƅ, Γ γ, Γj γj, Δ δ, D d, Ε ε, Ε̱ ε̱, Ζ ζ, Ζ̇ ζ̇, Θ θ, Ι ι, J j, Κ κ, Κ̇ κ̇, Λ λ, ΛΛ λλ, Λ̇ λ̇, Μ μ, Ν ν, Ν̇ ν̇, Ο ο, Π π, Ρ ρ, Ρ̇ ρ̇, Σ σ, Σ̈ σ̈, Τ τ, Ȣ ȣ, Υ υ, Φ φ, Χ χ, Χ̇ χ̇, ΤΣ τσ, ΤΣ̈ τσ̈, DΣ dσ, DΣ̈ dσ̈

X upper case (lower case x)

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

• (Latin-script letters) hərf; A a, B b, C c, Ç ç, D d, E e, Ə ə, F f, G g, Ğ ğ, H h, X x, I ı, İ i, J j, K k, Q q, L l, M m, N n, O o, Ö ö, P p, R r, S s, Ş ş, T t, U u, Ü ü, V v, Y y, Z z

• IPA^(key): /iʃa/, [i.ʃa]

X (upper case, lower case x)

1. The twenty-fifth letter of the Basque alphabet, called ixa and written in the Latin script.

• (Latin-script letters) A a, B b, C c (Ç ç), D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, Ñ ñ, O o, P p, Q q, R r, S s, T t, U u (Ü ü), V v, W w, X x, Y y, Z z

• /ks/

X

1. A letter in the German-based alphabet of Central Franconian.
2. A letter in the Dutch-based alphabet of Central Franconian.

• In the German-based spelling, x is the default spelling for /ks/, but not the most frequent spelling. Following the German cognate or otherwise when there is an intervening morpheme boundary, the spellings chs, cks, ks (possibly also ggs) may be used instead.
• In the Dutch-based spelling, /ks/ is usually represented by ks. The letter x occurs only rarely in loanwords.
• X is never doubled and preceding vowels are short unless they are themselves doubled (as in English).

X

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

X

1. The second letter used in Pinyin.

1. IPA^(key): /x/

X (lower case x)

1. A letter of the Comox alphabet, written in the Latin script.

• (letter name) IPA^(key): /ɪks/

• Audio

  (file)

X (capital, lowercase x)

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

• Previous letter: W
• Next letter: Y

X (upper case, lower case x)

1. (replacement) The letter that represents a diacritic in the x-system, written after the letter in its non-diacriticed form; it is called ikso.

   ambaŭ → ambaux

The Finnish orthography using the Latin script was based on those of Swedish, German and Latin, and was first used in the mid-16th century. No earlier script is known. See the Wikipedia article on Finnish for more information, and X for information on the development of the glyph itself.

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.

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

• (Latin-script letters) kirjain; A a, B b, C c, D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s (Š š), T t, U u, V v (W w), X x, Y y, Z z (Ž ž), Å å, Ä ä, Ö ö

• IPA^(key): /iks/

• Audio (Paris)

  (file)

X m or f (plural X)

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

X (invariable)

1. X-rated

• film X

• IPA^(key): /ʔɪks/

• Audio

  (file)

• Rhymes: -ɪks

X (upper case, lower case x)

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

• (letter name) IPA^(key): [ˈiks]
• (phonetic realization) IPA^(key): [ˈks]

X (upper case, lower case x)

1. A letter of the extended Hungarian alphabet, called iksz and written in the Latin script.

• (Latin-script letters) betű; A a, Á á, B b, C c, Cs cs, D d, Dz dz, Dzs dzs, E e, É é, F f, G g, Gy gy, H h, I i, Í í, J j, K k, L l, Ly ly, M m, N n, Ny ny, O o, Ó ó, Ö ö, Ő ő, P p, R r, S s, Sz sz, T t, Ty ty, U u, Ú ú, Ü ü, Ű ű, V v, Z z, Zs zs. Only in the extended alphabet: Q q W w X x Y y. Commonly used: ch. Also defined: à ë. In surnames (selection): ä aa cz ds eé eö ew oe oó th ts ÿ.

• IPA^(key): /ks/

X (lower case x)

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

• (Latin-script letters) litero; A a, B b, C c, D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s, T t, U u, V v, W w, X x, Y y, Z z

• (letter name) IPA^(key): /ˈiks/
  • Rhymes: -iks
• (phonemic realization) IPA^(key): /ks/

X f or m (invariable, upper case, lower case x)

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

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

• (Latin-script letters) lettera; A a (À à), B b, C c, D d, E e (É é, È è), F f, G g, H h, I i (Í í, Ì ì, Πî, J j, K k), L l, M m, N n, O o (Ó ó, Ò ò), P p, Q q, R r, S s, T t, U u (Ú ú, Ù ù), V v (W w, X x, Y y), Z z
• Italian alphabet on Wikipedia.Wikipedia

From Japanese ×(ばつ).

X

1. false.

• O

OX

• IPA^(key): /x/

X (lower case x)

1. A letter of the Kwak'wala alphabet, written in the Latin script.

Borrowed from Ancient Greek Χ (Kh, “chi”), which represented /ks/ in the dialects of most of the Greek mainland and Euboea.

The sound of X was like that of the Greek Ξ (X, “xi”), that is /ks/, although etymologically it represented not only cs (as in lūx, from luc-s, and dīxī, from dic-si), but also gs (as in lēx, from leg-s; rēxī, from reg-si); hs (as in trāxī, from trah-si; vexī, from veh-si); and chs (as in the word onyx, from onych-s, borrowed from the Greek). The hardening of a softer final (g, h, ch) before s into the с sound, which occurs in the last-mentioned cases, is found also in several roots ending in v and u: nix for niv-s, vīxī for viv-si, connixī for conniv-si, fluxī for fluv-si, from fluō (root fluv-; compare fluvius), struxī for stru-si.

Less frequently x has arisen from the combinations ps and ts: proximus for prop-simus (from prope), nīxus for nit-sus (from nītor), the latter being used along with the collateral form nīsus, as also connīvī with connixī, and mistus (from misceō) with mixtus.

An exchange of the sounds ss or s and x, took place in axis for assis and laxus for lassus. In the later language of the vulgar, the guttural sound in x disappeared, and s or ss was often written for it; as vis for vix, visit for vīxit, unsit for unxit, conflississet for conflixisset, in late inscriptions; hence regularly in Italian, and frequently in the other Romance tongues, the Latin x is represented by s or ss.

By a mere graphic variation, one of the constituent sounds of x is often expressed in inscriptions (but not the earliest) by an additional с or s; as SACXO or SAXSO for saxō; VCXOR or VXSOR for uxor; CONIVNCX or CONIVNXS for conjunx; even both sounds are sometimes thus expressed, VICXSIT for vīxit.

X (upper case, lower case x)

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

X

1. ten; decem.

• Roman numeral letters: I, V, L, C, D, M.
• Unicode glyphs of Roman numerals: Ⅹ, ⅹ.
• Appendixes: Roman numerals, Latin cardinal numerals

• “X” in Charlton T. Lewis and Charles Short [1907], A New Latin Dictionary.

• (letter name) IPA^(key): [ɛk̚s]
• (phonetic realization) IPA^(key): (onset) [z], (coda) [k̚s]

X

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

• (Latin-script letters) A a, B b, C c, D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s, T t, U u, V v, W w, X x, Y y, Z z

X (upper case X, lower case x)

1. the 24th letter of the Norwegian alphabet

Mostly used in loan words and foreign names. Also used in old inscriptions and texts instead of ks.

(letter name)

(phonetic realization) IPA^(key): /s/, /z/, /ʃ/, /ks/, /ɡz/

X (upper case, lower case x)

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

• (Latin-script letters) letra; A a (Á á, À à,  â, àã), B b, C c (Ç ç), D d, E e (É é, Ê ê), F f, G g, H h, I i (Í í), J j, K k, L l, M m, N n, O o (Ó ó, Ô ô, Õ õ), P p, Q q, R r, S s, T t, U u (Ú ú), V v, W w, X x, Y y, Z z
• xis

• IPA^(key): /x/

X (upper case, lower case x)

1. (International Standard) The eleventh letter of the Romani alphabet, written in the Latin script.
2. (Pan-Vlax) The twelfth letter of the Romani alphabet, written in the Latin script.

• (Latin-script letters) A a, B b, C c, D d, E e, F f, G g, H h, X x, I i, J j, K k, Kh kh, L l, M m, N n, O o, P p, Ph ph, R r, S s, T t, Th th, U u, V v, Z z International Standard: (À à, Ä ä, Ǎ ǎ), Ć ć, Ćh ćh, (È è, Ë ë, Ě ě), (Ì ì, Ï ï, Ǐ ǐ), (Ò ò, Ö ö, Ǒ ǒ), Rr rr, Ś ś, (Ù ù, Ü ü, Ǔ ǔ), Ź ź, Ʒ ʒ, Q q, Ç ç, ϴ θ. Pan-Vlax: Č č, Čh čh, Dž dž, (Dź dź), Ř ř, Š š, (Ś ś), Ž ž, (Ź ź).

• Yūsuke Sumi (2018) “X, x”, in ニューエクスプレス　ロマ（ジプシー）語 [New Express Romani (Gypsy)] (in Japanese), Tokyo: Hakusuisha, →ISBN, page 13

• (phonetic realization) IPA^(key): /ks/, /ɡz/

X (upper case, lower case x)

1. The twenty-ninth letter of the Romanian alphabet, called ics and written in the Latin script.

• (Latin-script letters) A a, Ă ă,  â, B b, C c, D d, E e, F f, G g, H h, I i, Πî, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s, Ș ș, T t, Ț ț, U u, V v, W w, X x, Y y, Z z

• (phonetic realization) IPA^(key): /x̠/

X

1. The thirty-fifth letter of the Saanich alphabet, written in the Latin script.

• (Latin-script letters) A, Á, Ⱥ, B, C, Ć, Ȼ, D, E, H, I, Í, J, K, Ꝁ, Ꝃ, ₭, Ḵ, Ḱ, L, Ƚ, M, N, Ṉ, O, P, Q, S, Ś, T, Ⱦ, Ṯ, Ŧ, U, W, W̱, X, X̱, Y, Z, s, ,

• (letter name) IPA^(key): /ħɑ/
• (phonetic realization) IPA^(key): /ħ/

X upper case (lower case x)

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

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

• (Latin-script letters) ʼ, B b, T t, J j, X x, Kh kh, D d, R r, S s, Sh sh, Dh dh, C c, G g, F f, Q q, K k, L l, M m, N n, W w, H h, Y y, A a, E e, I i, O o, U u

• IPA^(key): /ˈekis/ [ˈe.kis]
• Rhymes: -ekis

X (upper case, lower case x)

1. The twenty-fifth letter of the Spanish alphabet, written in the Latin script.

Borrowed from Spanish X. Each pronunciation has a different source:

• Filipino alphabet pronunciation is influenced by English X.
• Abecedario pronunciation is from Spanish X.

• (Standard Tagalog)
  • IPA^(key): /ˈʔeks/ [ˈʔɛks] (letter name, Filipino alphabet)
    • Rhymes: -eks
  • IPA^(key): /ˈʔekis/ [ˈʔɛ.xɪs] (letter name, Abecedario)
    • Rhymes: -ekis
  • IPA^(key): /ks/ [ks] (phoneme)
  • IPA^(key): /h/ [h] (phoneme, some Spanish loanwords)

X (upper case, lower case x, Baybayin spelling ᜁᜃ᜔ᜐ᜔)

1. The twenty-sixth letter of the Tagalog alphabet (the Filipino alphabet), called eks and written in the Latin script.

• This letter is mostly used only in proper nouns, unadapted loanwords, or Spanish-based spellings.

• (Latin-script letters) titik; A a, B b, C c, D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, Ñ ñ, Ng ng, O o, P p, Q q, R r, S s, T t, U u, V v, W w, X x, Y y, Z z

X (upper case, lower case x, Baybayin spelling ᜁᜃᜒᜐ᜔)

1. (historical) The twenty-sixth letter of the Tagalog alphabet (the Abecedario), called equis or ekis and written in the Latin script.

• chapter X, in Pambansang Diksiyonaryo | Diksiyonaryo.ph, Manila, 2018

• (Hà Nội) IPA^(key): [ʔit̚˧˦ si˨˩]
• (Huế) IPA^(key): [ʔit̚˦˧˥ ʂɪj˦˩] ~ [ʔit̚˦˧˥ sɪj˦˩]
• (Hồ Chí Minh City) IPA^(key): [ʔɨt̚˦˥ ʂɪj˨˩] ~ [ʔɨt̚˦˥ sɪj˨˩]
• Phonetic: ít sìThe template Template:vi-IPA does not use the parameter(s):

  2=ít-xì
  3=xờ
  4=xờ nhẹ

  Please see Module:checkparams for help with this warning.

X (upper case, lower case x)

1. The twenty-eighth letter of the Vietnamese alphabet, called ích, ích xì, xờ, or xờ nhẹ and written in the Latin script.

• (Quốc ngữ letters) chữ cái; A a (À à, Ả ả, àã, Á á, Ạ ạ), Ă ă (Ằ ằ, Ẳ ẳ, Ẵ ẵ, Ắ ắ, Ặ ặ),  â (Ầ ầ, Ẩ ẩ, Ẫ ẫ, Ấ ấ, Ậ ậ), B b, C c (Ch ch), D d, Đ đ, E e (È è, Ẻ ẻ, Ẽ ẽ, É é, Ẹ ẹ), Ê ê (Ề ề, Ể ể, Ễ ễ, Ế ế, Ệ ệ), G g (Gh gh, Gi gi), H h, I i (Ì ì, Ỉ ỉ, Ĩ ĩ, Í í, Ị ị), K k (Kh kh), L l, M m, N n (Ng ng, Ngh ngh, Nh nh), O o (Ò ò, Ỏ ỏ, Õ õ, Ó ó, Ọ ọ), Ô ô (Ồ ồ, Ổ ổ, Ỗ ỗ, Ố ố, Ộ ộ), Ơ ơ (Ờ ờ, Ở ở, Ỡ ỡ, Ớ ớ, Ợ ợ), P p (Ph ph), Q q (Qu qu), R r, S s, T t (Th th, Tr tr), U u (Ù ù, Ủ ủ, Ũ ũ, Ú ú, Ụ ụ), Ư ư (Ừ ừ, Ử ử, Ữ ữ, Ứ ứ, Ự ự), V v, X x, Y y (Ỳ ỳ, Ỷ ỷ, Ỹ ỹ, Ý ý, Ỵ ỵ)

X (upper case, lower case x)

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

• (Latin-script letters) A a, B b, C c, D d, E e, F f, G g, H h, I i, J j, K k, L l, M m, N n, O o, P p, Q q, R r, S s, T t, U u, V v, W w, X x, Y y, Z z