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 of noon

• midday

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

Kickoff from Hard Rock Stadium is scheduled for noon on Thursday, making the customarily late-night Orange Bowl an afternoon game this year. —Jordan McPherson, Miami Herald, 28 Dec. 2025

The fire crew managed to contain the fire entirely as of Saturday noon. —Ca Wildfire Bot, Sacbee.com, 27 Dec. 2025

Saturday will start with dense fog across most of the state, which will dissipate by noon. —Lisa Meadows, CBS News, 27 Dec. 2025

First at noon on New Year's Eve in Heritage Square so younger kids can enjoy the tradition. —Paige Moore, AZCentral.com, 27 Dec. 2025

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

Rhymes for noon

• boon
• brune
• coon
• croon
• dune
• goon
• hewn
• hoon
• june
• loon
• moon
• poon

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.