SINCE 1828

o'

preposition \ ə , ō \

variants: or less commonly o

Definition of o'

1 chiefly dialectal : on

2 : of

one o'clock

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Origin and Etymology of o'

Middle English o, o-, contraction of on & of

NEW! Time Traveler

First Known Use: 13th century

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WORD OF THE DAY

maieutic

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relating to the Socratic method

BROWSE DICTIONARY

O

o-

o'

O'Boyle

O'Brian

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o'

Definition of o'

Origin and Etymology of o'