o'

preposition

ə,
ō How to pronounce o' (audio)
variants or less commonly o
1
chiefly dialectal : on
2
: of
one o'clock

Word History

Etymology

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

First Known Use

13th century, in the meaning defined at sense 1

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

Dictionary Entries Near o'

Cite this Entry

“O'.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/o%27. Accessed 7 Dec. 2022.

Kids Definition

o'

preposition
variants also o
: of
one o'clock
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