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From the Etruscan letter 𐌏 (o, “o”), from the Ancient Greek letter Ο (O, “omikron”), derived from the Phoenician letter 𐤏 (ʿ, “ʿayin”), from the Egyptian hieroglyph 𓁹.
O (lower case o)
- The fifteenth 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 O): Óó Òò Ŏŏ Ôô Ốố Ồồ Ỗỗ Ổổ Ǒǒ Öö Ȫȫ Őő Õõ Ṍṍ Ṏṏ Ȭȭ Ȯȯ Ȱȱ Øø Ǿǿ Ǫǫ Ǭǭ Ōō Ṓṓ Ō̂ō̂ Ṑṑ Ỏỏ Ȍȍ Ȏȏ Ơơ Ớớ Ờờ Ỡỡ Ởở Ợợ Ọọ Ộộ Ɵɵ ⱺ ᴏ Oo Ꜵꜵ Œœ Ꝏꝏ Ꝍꝍ Ȣȣ
O
- (chemistry) Symbol for oxygen.
- (sports) success
- (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
- (linguistics) A wildcard for a rounded vowel or a back vowel
- synonyms: U
- Letter styles
-
Uppercase and lowercase versions of O, in normal and italic type
-
Uppercase and lowercase O in Fraktur
Character=OPlease see Module:checkparams for help with this warning.
Other representations of O:
(Name of letter):
- (Received Pronunciation) IPA(key): /əʊ/
- (General American) IPA(key): /oʊ/
- Rhymes: -əʊ, -oʊ
O (upper case, lower case o, plural Os or O's)
- The fifteenth letter of the English alphabet, called o and written in the Latin script.
1959, Anthony Burgess, Beds in the East (The Malayan Trilogy), published 1972, page 421:
"Supposing somebody sees you, with all those flowers too? Supposing somebody writes him a letter? Ooooh!" (a pure round open Tamil O.)
- Something shaped like the letter O.
1938, Norman Lindsay, chapter XX, in Age of Consent, London: T[homas] Werner Laurie […], →OCLC, page 213:
She was lying in the lee of a fowlhouse in a crumpled posture, as if cohesion had been detached from her joints, which lobbed her in an untidy heap, like a lot of old bones, tied together with string. Her skull was hitched under her humped shoulders and her fallen jaw made a lipless O of her mouth, giving it an expression of imbecile astonishment.
- (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.
- (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
O (upper case, lower case o)
- The ordinal number fifteenth, derived from this letter of the English alphabet, called o and written in the Latin script.
From Middle English O, o, from Old English o, from Latin o and Ancient Greek ὦ (ô, interjection). Featured prominently in William Tyndale's 1525 translation of the New Testament.
O
- The vocative particle, used for direct address.
- O Death! O Death! Won't you spare me over till another year? - part of the refrain from the American folk song "A Conversation with Death".
1526, [William Tyndale, transl.], The Newe Testamẽt […] (Tyndale Bible), [Worms, Germany: Peter Schöffer], →OCLC, Romans ij:[1, 3], folio cc, verso:
Therfore arte thou inexcuſable o man whoſoever thou be that iudgeſt. For in that ſame where in thou iudgeſt another / thou cõdemneſt thy ſilfe. For thou that iudgeſt doest evẽ the ſame ſilfe thynges. […] Thynkeſt thou O man that iudgeſt them which do ſoche thyngꝭ and yet doſt evẽ the very ſame / that thou ſhalt eſcape the iudgemẽt of God?
- c. 1810-1820?, Samuel Taylor Coleridge, Notes on Macbeth
- O! the affecting beauty of the death of Cawdor, and the presentimental speech of the king: […]
- For more quotations using this term, see Citations:O.
- The word O is typically 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.
a vocative particle
- Ancient Greek: ὦ (ô)
- Arabic: يَا (ar) (yā), أَيُّهَا m (ʔayyuhā), أَيَّتُهَا f (ʔayyatuhā)
- Egyptian Arabic: يا (yā)
- Armenian: ով (hy) (ov)
- Belarusian: о (o)
- Catalan: oh, o (ca)
- Chinese:
- Finnish: oi (fi)
- French: ô (fr)
- German: o (de)
- Hebrew: הו (ho)
- Irish: a (ga)
- Italian: o (it), oh (it)
- Japanese: よ (ja) (yo), ああ (ja) (ā)
- Korean: 여 (ko) (yeo), 시여 (siyeo), 아 (ko) (a)
- Latin: o (la)
- Malay: wahai
- Old Tupi: gûé, gûy, îu, îó
- Persian: ای (fa) (ey), الا (fa) (alâ)
- Polish: o (pl)
- Portuguese: ó (pt)
- Russian: о (ru) (o)
- Sanskrit: हे (sa) (he)
- Scottish Gaelic: a
- Sicilian: o (scn), oh
- Spanish: oh (es), oy (es) m
- Swedish: o (sv)
- Tagalog: oh (formally)
- Tocharian B: yśe
- Turkish: ey (tr), ya (tr)
- Ukrainian: о (uk) (o)
- Urdu: اَے (ai)
- Vietnamese: hỡi (vi), lạy (vi)
O (plural Oes)
- An utterance of the vocative O.
- Anglo-Saxon: ēalā, ǣlā, hēlā.
- la (a particle for introducing a statement or expressing surprise), lo
- oh.
Abbreviation.
O
- (stenoscript) Abbreviation of out, letter/sound sequence out.
- aO 'about'
O (countable and uncountable, plural Os)
- (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.
- (cricket) The number of overs bowled.
- (slang) Orgasm.
- Synonym: big O
1998 October 17, M6968, “STORY: The Violation of Sunny a wrestling story, by Wonder Mike”, in alt.sex.stories[1] (Usenet), retrieved November 22, 2014:
Sunny felt some cold and wet press against her pussy, it startled her, then it's[sic] 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.
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.
- (slang, uncountable) Opium.
1952, Collier's: Incorporating Features of the American Magazine, page 22:
We lay on our stomachs on the living-room floor in a circle around our host, a skinny little man who said he'd been smoking O for 20 years.
O (not comparable)
- (historical) Abbreviation of morally offensive. (film classification of the National Legion of Decency)
- (Judaism) Abbreviation of Orthodox.
Korean 오(伍) (O) or 오(吳) (O). Doublet of Wu.
O
- A surname from Korean.
From Mandarin 鄂 (È) Wade–Giles romanization: O⁴.
- (from Hanyu Pinyin) E
O
- A surname from Mandarin Chinese.
- Alternative form of E (Ancient Chinese Kingdom)
[1906, Frederick D. Cloud, Hangchow, the "City of Heaven"[4], Shanghai: Presbyterian Mission Press, →OCLC, →OL, page 53:
ACCORDING to various inscriptions about this famous temple we are told that it was erected to the memory of Ya Fei, "An Unswerving Guardian to the Heir-Apparent," of the Sung dynasty; "A Loyal-to-the-end Minister," who came from the ancient state of O-Kuo, the present Wu Ch'ang-fu of Hupei; and that it was erected by the Emperor Hsiao Tsung as an atonement for the weakness and follies of his father, Kao Tsung, toward a faithful servant of the empire who came to his untimely death through the diabolical schemes of men in high estate. Moreover, that after his death and burial, when the empire came to appreciate his great services to the people, the posthumous title of " Prince of O-Kuo" was bestowed upon his sacred memory.]
1976, Noel Barnard, The Proceedings of a Symposium on Scientific Methods of Research in the Study of Ancient Chinese Bronzes and Southeast Asian Metal and Other Archaeological Artifacts, October 6-10, 1975, National Gallery of Victoria, Melbourne[6], →ISBN, →OCLC, →OL, page 107:
⁶There are actually several geographical identifications proposed for the State of O: Wu-ch'ang in Hupei, Huai-ch'ing in Honan, and Fu-fang, Shensi (in the south-east thereof). As two inscriptions connected with the State of O refer to invasions....
2006, Ch'ien Ssu-ma, edited by William H. Nienhauser, Jr., The Grand Scribe's Records,[7], volume V.1, →ISBN, →OCLC, →OL, page 385:
[…] Yang-yüeh 楊粵,⁴⁰ reaching as far as O 鄂.⁴¹ […] He then enthroned his elder son K'ang 康⁴³ as King of Kou Tan 句亶,⁴⁴ his middle song Hung 紅 as King of O 鄂,⁴⁵ and his younger son Chih-tz'u 執疵 as King of Yüeh-chang 越章.⁴⁶
- For more quotations using this term, see Citations:O.
From Hokkien 烏/乌 (o͘, “dark”) or Teochew 烏/乌 (ou1).
O (not comparable)
- (Singapore, colloquial, after kopi (“coffee”) or teh (“tea”)) With sugar and no condensed milk added.
O
- The fifteenth letter in the Afar alphabet.
O (upper case, lower case o)
- The fifteenth letter of the Afrikaans alphabet, written in the Latin script.
O
- The eleventh letter of the Angami alphabet, written in the Latin script.
- (Latin-script letters) Ü ü, Üi üi, A a, Ai ai, I i, Ie ie, U u, Uo uo, E e, Ei ei, O o, Ou ou, K k, Kh kh, G g, Ng ng, C c, Ch ch, J j, Jh jh, Ny ny, T t, Th th, D d, N n, Ts ts, Tsh tsh, Dz dz, P p, Ph ph, B b, M m, Pf pf, Bv bv, Y y, Yh yh, R r, Rh rh, L l, Lh lh, F f, V v, W w, Wh wh, S s, Sh sh, Z z, Zh zh, H h
O upper case (lower case o)
- The twenty-first letter of the Azerbaijani alphabet, written in the Latin script.
O (upper case, lower case o)
- The sixteenth letter of the Basque alphabet, called o and written in the Latin script.
- /ɔ/ is from Middle High German o in most closed syllables, in some dialects also in open syllables.
- /o/ is from u in most closed syllables.
- /ɔː/ is from ā; from o before certain consonants; in eastern Moselle Franconian from ou.
- /oː/ is from uo in Ripuarian and northern Moselle Franconian; from ou in Ripuarian and northwestern Moselle Franconian; from ō in southern Moselle Franconian; in some Moselle Franconian dialects from o in open syllables.
O
- A letter in the German-based alphabet of Central Franconian.
- A letter in the Dutch-based alphabet of Central Franconian.
- In the Dutch-based spelling, short closed /o/ is represented by ó, long open /ɔː/ by ao.
Doubling of long O
- In the German-based spelling, long o is doubled to oo when the German cognate word has oo as well. Long o may or may not be doubled in the following cases:
- when it is followed by two or more consonants: Plooch or Ploch;
- when the German cognate has two vowel letters: Boom or Bom (German Baum);
- when the German cognate has a consonant lost or not present in Central Franconian: Zoote or Zote (German Sorten);
- when the German cognate has a short vowel: Mooder or Moder (German Mutter).
- In the Dutch-based spelling, long o is always doubled in closed syllables, always written simple in open syllables.
- Cantonese
- (Standard Cantonese, Guangzhou–Hong Kong)+
- Jyutping: ou1
- Yale: ōu
- Cantonese Pinyin: ou1
- Guangdong Romanization: ou1
- Sinological IPA (key): /ou̯⁵⁵/
- (Standard Cantonese, Guangzhou–Hong Kong)+
O
- (Hong Kong Cantonese) Short for OK (“alright”).
- Cantonese
- (Standard Cantonese, Guangzhou–Hong Kong)+
- Jyutping: ou1
- Yale: ōu
- Cantonese Pinyin: ou1
- Guangdong Romanization: ou1
- Sinological IPA (key): /ou̯⁵⁵/
- (Standard Cantonese, Guangzhou–Hong Kong)+
O
- (Hong Kong Cantonese, slang) in a relationship
A number may be placed after O to indicate the number of relationships a person has had, including the current one.
Initialism of English orientation.
- Cantonese
- (Standard Cantonese, Guangzhou–Hong Kong)+
- Jyutping: ou1
- Yale: ōu
- Cantonese Pinyin: ou1
- Guangdong Romanization: ou1
- Sinological IPA (key): /ou̯⁵⁵/
- (Standard Cantonese, Guangzhou–Hong Kong)+
O
- Mandarin
- (Standard Chinese)+
- Hanyu Pinyin: ōu
- Zhuyin: ㄡ
- Tongyong Pinyin: ou
- Wade–Giles: ou1
- Yale: ōu
- Gwoyeu Romatzyh: ou
- Palladius: оу (ou)
- Sinological IPA (key): /ˀoʊ̯⁵⁵/
- (Standard Chinese)+
- Cantonese
- (Standard Cantonese, Guangzhou–Hong Kong)+
- Jyutping: ou1
- Yale: ōu
- Cantonese Pinyin: ou1
- Guangdong Romanization: ou1
- Sinological IPA (key): /ou̯⁵⁵/
- (Standard Cantonese, Guangzhou–Hong Kong)+
- Southern Min
- Wu
O
- The fifteenth letter of the Latin alphabet.
- Mandarin
- (Standard Chinese)+
- Hanyu Pinyin: ō
- Zhuyin: ㄛ
- Tongyong Pinyin: o
- Wade–Giles: o1
- Yale: ō
- Gwoyeu Romatzyh: o
- Palladius: о (o)
- Sinological IPA (key): /ˀɔ⁵⁵/
- (Standard Chinese)+
O
- The fifteenth letter used in Pinyin.
- The pronunciation above are only used while referring to letters in Pinyin. They are not used in other context (such as English).
O (capital, lowercase o)
- the fifteenth letter of the Dutch alphabet
O
- a surname
- 1904, certificate of marriage number 9 of 1904 of Sint-Pieters-Leeuw (reproduced in: Patrick Trio ((Can we date this quote?)) Nakomelingen van Arnoldus O[9])
Op 10/02/1904 om 11:00 uur zijn voor ons Zacharias De Ro, schepen gehuwd: Theophilius O […] enerzijds en anderzijds Maria Elisabetha Troucheau […]
- On February 10, 1904 at 11 am in the presence of ourselves, Zacharias De Ro, alderman, did marry: Theophilius O […] on the one hand and on the other hand Maria Elisabetha Troucheau […]
- 1904, certificate of marriage number 9 of 1904 of Sint-Pieters-Leeuw (reproduced in: Patrick Trio ((Can we date this quote?)) Nakomelingen van Arnoldus O[9])
O
- Abbreviation of oost; east
O (upper case O, lower case o)
- The eighteenth letter of the Elfdalian alphabet, written in the Latin script.
O (upper case, lower case o)
- The nineteenth letter of the Esperanto alphabet, called o and written in the Latin script.
O (upper case, lower case o)
- The fifteenth letter of the Estonian alphabet, called oo and written in the Latin script.
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 O for information on the development of the glyph itself.
O (upper case, lower case o)
- The fifteenth letter of the Finnish alphabet, called oo and written in the Latin script.
- (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
O
- (linguistics) Either the vowel o /o/ or ö /ø/, depending on vowel harmony.
Used in linguistic descriptions in Finnish. For example, a Finnish grammar could use -tOn to refer to the suffix -ton (in e.g. mauton) or -tön (in e.g. ääretön).
O
- Abbreviation of ouest; west
O
- the fifteenth letter of the French alphabet
O
- (west): W
O (upper case, lower case o)
- The fifteenth letter of the German alphabet.
O
- Abbreviation of Ost; east
O (upper case, lower case o)
- The twenty-fourth letter of the Hungarian alphabet, called o and written in the Latin script.
Inflection (stem in long/high vowel, back harmony) | ||
---|---|---|
singular | plural | |
nominative | O | O-k |
accusative | O-t | O-kat |
dative | O-nak | O-knak |
instrumental | O-val | O-kkal |
causal-final | O-ért | O-kért |
translative | O-vá | O-kká |
terminative | O-ig | O-kig |
essive-formal | O-ként | O-kként |
essive-modal | — | — |
inessive | O-ban | O-kban |
superessive | O-n | O-kon |
adessive | O-nál | O-knál |
illative | O-ba | O-kba |
sublative | O-ra | O-kra |
allative | O-hoz | O-khoz |
elative | O-ból | O-kból |
delative | O-ról | O-król |
ablative | O-tól | O-któl |
non-attributive possessive - singular |
O-é | O-ké |
non-attributive possessive - plural |
O-éi | O-kéi |
Possessive forms of O | ||
---|---|---|
possessor | single possession | multiple possessions |
1st person sing. | O-m | O-im |
2nd person sing. | O-d | O-id |
3rd person sing. | O-ja | O-i |
1st person plural | O-nk | O-ink |
2nd person plural | O-tok | O-itok |
3rd person plural | O-juk | O-ik |
O (lower case o)
- The fifteenth letter of the Ido alphabet, written in the Latin script.
O (upper case, lower case o)
- The fifteenth letter of the Indonesian alphabet, written in the Latin script.
O f or m (invariable, upper case, lower case o)
- The thirteenth letter of the Italian alphabet, called o and written in the Latin script.
O m
- Abbreviation of ovest; west
The Kashubian orthography is based on the Latin alphabet. No earlier script is known. See the Kashubian alphabet article on Wikipedia for more, and O for development of the glyph itself.
O (upper case, lower case o)
- The twentieth letter of the Kashubian alphabet, written in the Latin script.
- ○ (rare)
O • (O)
- true.
- X (X)
- OX (OX)
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.
O (upper case, lower case o)
- The twenty-third letter of the Latvian alphabet, called o and written in the Latin script.
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]).
O (upper case, lower case o)
- The fifteenth letter of the Limburgish alphabet, written in the Latin script.
From earlier ou, from Old Limburgish ouga, from Proto-West Germanic *augā, from Proto-Germanic *augô.
O n (plural Owwe, diminutive Öögeltje) (Eupen)
- (anatomy) eye
- (on plants, esp. potatoes, grapevines and fruit trees) germ, bud; eye (potato)
- (on dice) dot, pip, spot
- (of a cyclonic storm) eye
Nominalized form of o f (“old”).
O
- The fifteenth letter of the Malay alphabet, written in the Latin script.
O (upper case, lower case o)
- The eighteenth letter of the Nupe alphabet, written in the Latin script.
The Polish orthography is based on the Latin alphabet. No earlier script is known. See the history of Polish orthography article on Wikipedia for more, and O for development of the glyph itself.
O (upper case, lower case o)
- The twentieth letter of the Polish alphabet, called o and written in the Latin script.
O (upper case, lower case o)
- The fifteenth letter of the Portuguese alphabet, written in the Latin script.
O (upper case, lower case o)
- (International Standard) The nineteenth letter of the Romani alphabet, written in the Latin script.
- (Pan-Vlax) The twentieth 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).
O (upper case, lower case o)
- The eighteenth letter of the Romanian alphabet, called o and written in the Latin script.
When followed by the letter a, a diphthong representing the phoneme /o̯a/ is formed, as in foarte /ˈfo̯ar.te/.
O
- The twenty-third letter of the Saanich alphabet, written in the Latin script.
O (upper case, lower case o)
The Silesian orthography is based on the Latin alphabet. No earlier script is known. See the Silesian language article on Wikipedia for more, and O for development of the glyph itself.
O (upper case, lower case o)
- The nineteenth letter of the Silesian alphabet, written in the Latin script.
O (lower case o)
- The twenty-fourth letter of the Skolt Sami alphabet, written in the Latin script.
O (capital, lowercase o)
- The sixteenth letter of the Slovene alphabet, written in the Latin script.
- The twenty-second letter of the Slovene alphabet (Resian), written in the Latin script.
- The seventeenth letter of the Slovene alphabet (Natisone Valley dialect), written in the Latin script.
O upper case (lower case o)
- The twenty-sixth letter of the Somali alphabet, called o and written in the Latin script.
O (upper case, lower case o)
- the 16th letter of the Spanish alphabet
O m
- Abbreviation of oeste; west
Borrowed from Spanish O. Each pronunciation has a different source:
- Filipino alphabet pronunciation is influenced by English O.
- Abakada alphabet pronunciation is influenced by the Baybayin character ᜂ (u).
- Abecedario pronunciation is from Spanish O.
- (Standard Tagalog)
- Syllabification: O
O (upper case, lower case o, Baybayin spelling ᜂ)
- The seventeenth letter of the Tagalog alphabet (the Filipino alphabet), called o and written in the Latin script.
- The thirteenth letter of the Tagalog alphabet (the Abakada alphabet), called o and written in the Latin script.
- (historical) The eighteenth letter of the Tagalog alphabet (the Abecedario), called o and written in the Latin script.
- (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
- “O”, in Pambansang Diksiyonaryo | Diksiyonaryo.ph, Manila, 2018
O (upper case, lower case o)
- The eighteenth letter of the Turkish alphabet, called o and written in the Latin script.
- (Hà Nội) IPA(key): [ʔɔ˧˧], [ʔo˧˧]
- (Huế) IPA(key): [ʔɔ˧˧], [ʔow˧˧]
- (Saigon) IPA(key): [ʔɔ˧˧], [ʔow˧˧]
- Phonetic spelling: o, ô
O (upper case, lower case o)
- The seventeenth letter of the Vietnamese alphabet, called o or ô and written in the Latin script.
O (upper case, lower case o)
- The nineteenth letter of the Welsh alphabet, called o and written in the Latin script. It is preceded by N and followed by P.
- O cannot be mutated but, being a vowel, does take h-prothesis, for example with the word oren (“orange”):
- (Latin-script letters) llythyren; A a (Á á, À à, Â â, Ä ä), B b, C c, Ch ch, D d, Dd dd, E e (É é, È è, Ê ê, Ë ë), F f, Ff ff, G g, Ng ng, H h, I i (Í í, Ì ì, Î î, Ï ï), J j, L l, Ll ll, M m, N n, O o (Ó ó, Ò ò, Ô ô, Ö ö), P p, Ph ph, R r, Rh rh, S s, T t, Th th, U u (Ú ú, Ù ù, Û û, Ü ü), W w (Ẃ ẃ, Ẁ ẁ, Ŵ ŵ, Ẅ ẅ), Y y (Ý ý, Ỳ ỳ, Ŷ ŷ, Ÿ ÿ)
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “O”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
O (upper case, lower case o)
- The sixteenth letter of the Yoruba alphabet, called ó and written in the Latin script.
- (Latin-script letters) lẹ́tà; A a (Á á, À à, Ā ā), B b, D d, E e (É é, È è, Ē ē), Ẹ ẹ (Ẹ́ ẹ́, Ẹ̀ ẹ̀, Ẹ̄ ẹ̄), F f, G g, Gb gb, H h, I i (Í í, Ì ì, Ī ī), J j, K k, L l, M m (Ḿ ḿ, M̀ m̀, M̄ m̄), N n (Ń ń, Ǹ ǹ, N̄ n̄), O o (Ó ó, Ò ò, Ō ō), Ọ ọ (Ọ́ ọ́, Ọ̀ ọ̀, Ọ̄ ọ̄), P p, R r, S s, Ṣ ṣ, T t, U u (Ú ú, Ù ù, Ū ū), W w, Y y
- (Benin) (Latin-script letters) lɛ́tà; A a, B b, D d, E e, Ɛ ɛ, F f, G g, Gb gb, H h, I i, J j, K k, Kp kp, L l, M m, N n, O o, Ɔ ɔ, P p, R r, S s, Sh sh, T t, U u, W w, Y y
O (upper case, lower case o)
- The fifteenth letter of the Zulu alphabet, written in the Latin script.