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.

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 …

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

Accents placed on the letter O —such as Ó, Ò, Ô, Õ, and Ö —change pronunciation, meaning, or grammatical emphasis. Accented O has a unique sound, and its usage varies depending on …

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

Learn all about the Letter O, with Jackson! Can you make the O sound? How many words do you know starting with the Letter O? Time to learn the alphabet!

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o - Wiktionary, the free dictionary. Jump to content. Main menu. move to sidebarhide. Navigation . Main page. Community portal. Requested entries. Recent changes. Random entry. Help. …

Dec 11, 2025 · Learn the various methods and techniques to type the letter O with an accent mark (ò, ó, ô, õ, ö) using your Windows or Mac keyboard.

Listed below are the keyboard shortcuts or Windows Alt codes for letter O with accents. The accents on the letter O are also called accent marks, diacritics, or diacritical marks.