daylong

American

[dey-lawng, -long] / ˈdeɪˌlɔŋ, -ˌlɒŋ /

adjective

during the entire day; lasting all day.

a daylong trip.

daylong British

/ ˈdeɪˌlɒŋ /

adjective

lasting the entire day; all day

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of daylong

First recorded in 1850–55; day + long ¹

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It also came after sunrise, just as practicing Muslims began the daylong fast during the Islamic holy month of Ramadan.

From The Wall Street Journal

During the daylong test, the astronauts suited up, boarded the SpaceX Dragon spacecraft, performed suit leak checks, and verified seat fit.

From Science Daily

The 2026 Roundtable met on Jan. 5 in New York for a daylong discussion of the investment backdrop and the 11 panelists’ latest picks.

From Barron's

Santa Margarita faces Sherman Oaks Notre Dame in a 7 p.m. basketball game as part of a daylong showcase.

From Los Angeles Times

He has played Santa for years at various locations in Southern California, including Riverside’s Mission Inn, but his daylong volunteer stint as Altadena’s Christmas Tree Lane Santa is dearest to his heart.

From Los Angeles Times

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023