o'·​clock | \ ə-ˈkläk How to pronounce o'clock (audio) , ō- \

Definition of o'clock

1 : according to the clock the time is three o'clock
2 used for indicating position or direction as if on a clock dial that is oriented vertically or horizontallyan airplane approaching at six o'clock

Examples of o'clock in a Sentence

Recent Examples on the Web Twelve o'clock high: WWII-era B-17 coming to Indy for flights, tours next month The Indianapolis-to-Phoenix flight is one of 28 new routes Allegiant announced this week nationwide. Fox59, Indianapolis Star, "Allegiant adds Indianapolis to Phoenix flight," 20 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'o'clock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of o'clock

1535, in the meaning defined at sense 1

History and Etymology for o'clock

contraction of of the clock

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Time Traveler for o'clock

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The first known use of o'clock was in 1535

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Cite this Entry

“O'clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/o%27clock. Accessed 3 Dec. 2020.

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How to pronounce o'clock (audio)

English Language Learners Definition of o'clock

: according to the clock


o'·​clock | \ ə-ˈkläk How to pronounce o'clock (audio) \

Kids Definition of o'clock

: according to the clock The time is one o'clock.

More from Merriam-Webster on o'clock

Nglish: Translation of o'clock for Spanish Speakers

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