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Definition O in British English

O

noun

1

the 15th letter of the English alphabet. O is a vowel.

Synonyms and related words

a ABC aitch aitch

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2

a way of saying 'zero', used for example when you are telling someone a telephone number or saying a date such as 1904

Synonyms and related words

zero nought oh oh

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3

a common blood group in the ABO system

Synonyms and related words

A ABO system anticoagulant anticoagulant

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Definition O in British English

Related Words

Words related to O:

c/o (abbreviation) jack-o’-lantern (noun) Jackie-O (adjective) Jell-O () John O’ Groats () o () O level () o’ () tam-o’-shanter (noun) will o’ the wisp (noun)