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  1. O - Wikipedia

    O, or o, is the fifteenth letter and the fourth vowel letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide.

  2. O | History, Etymology, & Pronunciation | Britannica

    O, the fourth vowel of the modern alphabet, corresponding to the Semitic ayin, which represented a breathing and not a vowel. The Semitic form may have derived from an earlier sign representing an …

  3. o - Wiktionary, the free dictionary

    The name of the Latin scriptletter O/o. A zero(used in reading out numbers). It is currently two-o-five in the afternoon (2:05 PM). The first permanent English settlement in America was in Jamestown in …

  4. O Definition & Meaning | Dictionary.com

    O definition: the fifteenth letter of the English alphabet, a vowel. See examples of O used in a sentence.

  5. O definition and meaning | Collins English Dictionary

    O is used to mean zero, for example when you are telling someone a phone number, or mentioning a year such as 1908.

  6. O, o | definition in the Cambridge English Dictionary

    O, o meaning: 1. the 15th letter of the English alphabet 2. used in speech to mean zero: 3. used when talking to…. Learn more.

  7. O noun - Definition, pictures, pronunciation and usage notes | Oxford ...

    Definition of O noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  8. O Definition & Meaning - YourDictionary

    The fifteenth letter of the English alphabet, called o and written in the Latin script.

  9. O | meaning of O in Longman Dictionary of Contemporary English

    From Longman Dictionary of Contemporary English Related topics: Letters & punctuation, Numbers O1, o /əʊ $ oʊ/ noun (plural O’s, o’s) 1 [countable, uncountable] the 15th letter of the English alphabet 2 …

  10. O - WordReference.com Dictionary of English

    -o is attached to certain nouns and adjectives to form informal nouns or adjectives; these are often used when speaking directly to another: kid + -o → kiddo (= a kid or person); neat + -o → neato (= an …