\ ə, ō How to pronounce o' (audio) \
variants: or less commonly o

Definition of o'

1 chiefly dialectal : on
2 : of one o'clock

First Known Use of o'

13th century, in the meaning defined at sense 1

History and Etymology for o'

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

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Time Traveler for o'

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The first known use of o' was in the 13th century

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Cite this Entry

“O'.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/o%27. Accessed 9 Aug. 2020.

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