noon

noun

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.
By Sunday noon, the fire crew successfully encircled the entire perimeter of the fire in control lines. Ca Wildfire Bot, Sacbee.com, 25 May 2025 They will be staffed from 9 to 11 a.m. and from noon to 1:30 p.m. Pioneer Press, Twin Cities, 25 May 2025 Free on New Haven Green with performances June 26 at 5 p.m., June 27 at 1, 3 and 5 p.m. and June 28 at noon and 2 p.m. Hang Him to the Scales and Christine Tassanet et les Imposteurs: A double bill of free bands on New Haven Green on June 26. Christopher Arnott, Hartford Courant, 25 May 2025 The event calls for volunteers to prep and deliver meals, with prep from 9:30 a.m. to 11:30 a.m. and meal delivery and serving from noon to 1 p.m. Post-Tribune, Chicago Tribune, 23 May 2025 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

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Cite this Entry

“Noon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/noon. Accessed 4 Jun. 2025.

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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