O
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Translingual
Letter
O (lower case o)
- The fifteenth letter of the basic modern Latin alphabet.
See also
Symbol
O
- (chemistry) Symbol for oxygen.
- (mathematics) big O: a class of functions asymptotically bounded from above by a specific function, up to a constant factor
- (linear algebra, group theory) orthogonal group
Gallery
- Letter styles
Normal and italic O
Uppercase and lowercase O in Fraktur
See also
Other representations of O:
English
Alternative forms
- o (for the vocative particle)
Etymology 1
Pronunciation
Letter
Noun
O (uncountable)
- A blood type that lacks A or B antigens and may only receive transfusions of similar type O blood, but may donate to all (neglecting Rh factor). Synonym: universal donor.
See also
Number
O (upper case, lower case o)
Etymology 2
English O, o is attested in William Tyndale's 1525 New Testament Translation, as a translation of Ancient Greek ὦ (ô, interjection), Latin o.
Particle
O
- The English vocative particle, used for direct address.
- 1525, Tyndale's translation of Romans 2.1,3:
- Therefore arte thou inexcusable o man whosoever thou be that iudgest. For in that same where in thou iudgest another, thou cõdemnest thysilfe. For thou that iudgest doest evẽ the same silfe thynges. […] Thynkest thou O man that iudgest them which do soche thyngs and yet dost evẽ the very same, that thou shalt escape the iudgemẽt of God?
- Samuel Taylor Coleridge
- O! the affecting beauty of the death of Cawdor, and the presentimental speech of the king: […]
- For more examples of usage of this term, see Citations:O.
- 1525, Tyndale's translation of Romans 2.1,3:
Usage notes
- The word O is always written in upper case in modern usage.
- O is often used in translations from languages which have the vocative case.
- Although it is not strictly archaic, the particle is sometimes used archaizingly. It conveys a formal or reverential tone.
Derived terms
Translations
Synonyms
See also
- Anglo-Saxon: ēalā, ǣlā, hēlā.
- la (a particle for introducing a statement or expressing surprise), lo
- oh.
Etymology 3
Abbreviation.
Abbreviation
O
- (cricket) The number of overs bowled.
- (slang) Orgasm. (Often used in the phrase the big O.)
- 1998 October 17, M6968, “STORY: The Violation of Sunny a wrestling story, by Wonder Mike”, in alt.sex.stories, Usenet, retrieved November 22, 2014:
- Sunny felt some cold and wet press against her pussy, it startled her, then it's tongue went deep inside of her, she had been eaten out before, but never this could, who ever was doing it was a real pro, and had to have the longest tongue in the world it was buried at least three inches inside of her and was taking long, hard strokes, it was trying to get even deeper, it was only seconds before she started shaking from her first O.
- 1999 March 31, JT aka GF, “Re: mary p., hex and going "downtown"”, in alt.psst.hoy, Usenet, retrieved November 22, 2014:
- Further on, when she's about to reach her first O, the taste turns from no taste to champagne-like.
- 2010, Lonnie Hicks, Einstein, Religion, Politics and Literature, page 308:
- She thought you could get pregnant from tonguing when kissing; about her first O and how it scared her; how she looked in the mirror afterwards to see if she had changed; about how scared she was when it came time to deliver the baby.
- 2011 June 14, wtw, “{wtw} - "4someWithFriends" (1/1)”, in alt.sex.stories, Usenet, retrieved November 22, 2014:
- Now my friend was fingering my wife and licking her clit. My wife reached her first O of the night.
-
Noun
O (uncountable)
- (printing) American Library Association abbreviation of octavo, a book size (20-25 cm).
- (soccer) Someone associated with Leyton Orient Football Club, as a player, coach, supporter etc.
Afar
Letter
O
- The fifteenth letter in the Afar alphabet.
See Also
- (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
American Sign Language
Letter

- The letter O
Azerbaijani
Letter
O upper case (lower case o)
See also
- (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
Dutch
Pronunciation
- (letter name): IPA(key): /oː/
-
Audio (file)
Letter
O (capital, lowercase o)
- The fifteenth letter of the Dutch alphabet.
Abbreviation
O
See also
Esperanto
Letter
O (upper case, lower case o)
See also
- (Latin-script letters) litero; A a, B b, C c, Ĉ ĉ, D d, E e, F f, G g, Ĝ ĝ, H h, Ĥ ĥ, I i, J j, Ĵ ĵ, K k, L l, M m, N n, O o, P p, R r, S s, Ŝ ŝ, T t, U u, Ŭ ŭ, V v, Z z
Finnish
Letter
O (upper case, lower case o)
See also
- (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
French
Pronunciation
- (letter) IPA(key): /o/
-
Audio (Paris) (file)
Abbreviation
O
Letter
O
- The fifteenth letter of the French alphabet.
Galician
Abbreviation
O
Synonyms
- (west): W
German
Pronunciation
- IPA(key): /ʔoː/
-
Audio (file)
Letter
O (upper case, lower case o)
- The fifteenth letter of the German alphabet.
Abbreviation
O
Ido
Letter
O (lower case o)
See also
- (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
Italian
Pronunciation
Letter
O m, f (invariable, lower case o)
See also
- (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, Î î, 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
Korean
Alternative forms
- ○ (rare)
Etymology
Symbol
O
- true.
Antonyms
Derived terms
Latvian
Etymology
Proposed in 1908 as part of the new Latvian spelling by the scientific commission headed by K. Mīlenbahs, which was accepted and began to be taught in schools in 1909. Prior to that, Latvian had been written in German Fraktur, and sporadically in Cyrillic.
Pronunciation
Letter

O (upper case, lower case o)
Usage notes
In native Latvian words (and in some older borrowings), o represents the sound of IPA [uə̯] (e.g., otrs [uə̯tɾs]). In more recent borrowings, it represents the original sound of the word, i.e. [o] or [oː] (e.g., opera [oːpeɾa]).
See also
- Letters of the Latvian alphabet:
Malay
Pronunciation
Letter
O
See also
- (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
Portuguese
Letter
O (upper case, lower case o)
See also
- (Latin-script letters) letra; A a (Á á, À à, Â â, Ã ã), 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
Romanian
Pronunciation
- IPA(key): /o/
Letter
O (upper case, lower case o)
- The eighteenth letter of the Romanian alphabet representing the phoneme /o/. Preceded by N and followed by P.
Usage notes
When followed by the letter a, a diphthong representing the phoneme /o̯a/ is formed, as in foarte /'fo̯ar.te/
Saanich
Pronunciation
- IPA(key): /ɑ/
Letter
O
See also
- (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, W̲, X, X̲, Y, Z, s, ,
Skolt Sami
Pronunciation
- (phoneme) IPA(key): /o/
Letter
O (lower case o)
See also
- (Latin-script letters) bukva; A a, Â â, B b, C c, Č č, Ʒ ʒ, Ǯ ǯ, D d, Đ đ, E e, F f, G g, Ǧ ǧ, Ǥ ǥ, H h, I i, J j, K k, Ǩ ǩ, L l, M m, N n, Ŋ ŋ, O o, Õ õ, P p, R r, S s, Š š, T t, U u, V v, Z z, Ž ž, Å å, Ä ä, ʹ
Slovene
Letter
O (capital, lowercase o)
- The 16th letter of the Slovene alphabet. Preceded by N and followed by P.
Somali
Pronunciation
Letter
O upper case (lower case o)
Usage notes
See also
- (Latin-script letters) ', 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
Spanish
Letter
O (upper case, lower case o)
- The 16th letter of the Spanish alphabet.
Abbreviation
O
Turkish
Letter
O (upper case, lower case o)
See also
- (Latin-script letters) harf; A a, B b, C c, Ç ç, D d, E e, F f, G g, Ğ ğ, H h, I ı, İ i, J j, K k, 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
Vietnamese
Pronunciation
- (Hà Nội) IPA(key): [ʔɔ˧˧], [ʔo˧˧]
- (Huế) IPA(key): [ʔɔ˧˧], [ʔow˧˧]
- (Hồ Chí Minh City) IPA(key): [ʔɔ˧˧], [ʔow˧˧]
- Phonetic: o, ô
Letter
O (upper case, lower case o)
See also
- (Quốc ngữ letters) chữ; A a (À à, Ả ả, Ã ã, Á á, Ạ ạ), Ă ă (Ằ ằ, Ẳ ẳ, Ẵ ẵ, Ắ ắ, Ặ ặ), Â 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)
Zulu
Letter
O (upper case, lower case o)


