o
word
/ˈoʊ/
oh
/ˈəʊ/
oh
Definition
"O" is the fifteenth letter of the English alphabet and a vowel. It is also used to represent the sound /oʊ/ in English words.
Usage & Nuances
"O" is always pronounced as a vowel in the English alphabet. In some contexts, "O" can stand for zero (as in phone numbers), but this is informal. Do not confuse the capital 'O' with the digit '0' in writing.
Spanish: oPortuguese (BR): oPortuguese (PT): oChinese (Simplified): o（字母）Chinese (Traditional): o（字母）Hindi: o (अक्षर)Arabic: حرف oBengali: ORussian: ОJapanese: O（英語のアルファベット）Vietnamese: OKorean: OTurkish: OUrdu: OIndonesian: O
Example Sentences
The word "open" begins with the letter O.
basic
There is a big O on the wall.
basic
Can you write an O?
basic
Just circle the O on the answer sheet.
natural
I always mix up the number zero and the letter O.
natural
Her name is Olivia, so she writes a big, fancy O on her notebook.
natural