noon

noun

ˈnün 

1

: midday

specifically : 12 o'clock at midday

2

archaic : midnight

—used chiefly in the phrase noon of night

3

: the highest point

Synonyms

• high noon
• lunch time
• midday
• noonday
• noontide
• noontime

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

Don’t forget to mark your calendars: Our Monthly Meeting for December will be live-streamed on the website at noon ET on Wednesday. —Zev Fima, CNBC, 15 Dec. 2024

The nomination period and poll voting for Student of the Week opens every Monday and closes at noon each Thursday. —Gege Reed, The Courier-Journal, 13 Dec. 2024

To celebrate its opening, Chase’s Sandwich Shop is hosting 'Free Lunch Fridays' at noon on Dec. 13 and Dec. 20. —Haadiza Ogwude, The Enquirer, 13 Dec. 2024

At noon, the market closes and the Happy Hollow crew packs the trailer, takes a rough inventory and heads back to the farm tucked away in the Missouri River Valley for a cold beverage. —Jana Rose Schleis, USA TODAY, 12 Dec. 2024

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

Phrases Containing noon

• high noon
• morning, noon, and night
• pre-noon

Kids Definition

noon

noun

ˈnün 

: 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.