noon

noun

Synonyms of noonnext
1
: midday
specifically : 12 o'clock at midday
2
archaic : midnight
used chiefly in the phrase noon of night
3
: the highest point

Examples of noon in a Sentence

The party will take place from noon to 4 p.m. He showed up at precisely 12 noon.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Among the festivities the Proud Pet Parade on Sunday at noon on the North Stage hosted by the popular Miss Foozie. Elyssa Kaufman, CBS News, 20 June 2026 Seattle fortress There was no fashionably late-arriving crowd at the stadium on Friday for a noon start despite the revelry downtown on Thursday night. David Close, CNN Money, 20 June 2026 The main building at Chicago’s Ford City Mall will shut down for good — by court order — at noon on Monday, ending a yearslong legal struggle between the city and the property’s owner. Brian J. Rogal, Chicago Tribune, 20 June 2026 Just past noon, a young man appeared on the north side of San Vicente Boulevard, a block west of Hauser, and eyeballed the flow of westbound traffic. Steve Lopez, Los Angeles Times, 20 June 2026 See All Example Sentences for noon

Word History

Etymology

Middle English, from Old English nōn ninth hour from sunrise, from Latin nona, from feminine of nonus ninth; akin to Latin novem nine — more at nine

First Known Use

13th century, in the meaning defined at sense 1

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

Browse Nearby Words

Cite this Entry

“Noon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/noon. Accessed 24 Jun. 2026.

Kids Definition

noon

noun
: the middle of the day : 12 o'clock in the daytime
noon adjective
Etymology

Old English nōn "ninth hour from sunrise," derived from Latin nona, a feminine form of nonus "ninth," from novem "nine"

Word Origin
Noon has not always meant "12 o'clock in the daytime." In the ancient Roman way of keeping track of time, the hours of the day were counted from sunrise to sunset. The ninth hour of their day (about 3 p.m. nowadays) was called nona, Latin for "ninth." In the early period of English, the word was borrowed as nōn, also referring to the ninth hour after sunrise. By the 14th century, however, the word came to be used for midday, 12 o'clock, as we use it today.

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