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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. Letter O | Sing and Learn the Letters of the Alphabet - YouTube

    This super-catchy and clear alphabet song also lets children hear the letter O sound and see each letter at the beginning of five simple words paired with colorful kid-friend images.

  3. 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 …

  4. o - Wiktionary, the free dictionary

    Noun [edit] o(pluraloes) 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 …

  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' Definition & Meaning - Merriam-Webster

    The meaning of O' is on. How to use o' in a sentence.

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

    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 & Synonyms | Vocabulary.com

    Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.

  9. O - definition of O by The Free Dictionary

    O, o (oʊ) n., pl. O's Os, o's os oes. 1. the 15th letter of the English alphabet, a vowel. 2. any spoken sound represented by this letter.

  10. O Definition & Meaning | Dictionary.com

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