D-Day

noun

ˈdē-(ˌ)dā How to pronounce D-Day (audio)
variants or D-day
: a day set for launching an operation
specifically : June 6, 1944, on which Allied forces began the invasion of France in World War II

Examples of D-Day in a Sentence

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.
The film is based on the real-life Operation Fortitude, an Allied military deception designed to fool Nazi Germany about the true location of the D-Day landing in 1944. — Mya Copeland, Variety, 2 Sep. 2026 Yes, America is powerful, even more so than at the time of the D-Day landings in France in 1944. — Ned Temko, Christian Science Monitor, 27 Aug. 2026 Among them are places travelers have been visiting for decades, including the D-Day beaches of Normandy, Greece’s Mount Olympus, and the blue-and-white Tunisian village of Sidi Bou Saïd. — Bailey Berg, Forbes.com, 9 Aug. 2026 Based on a true story, the weather thriller tackles the intense days leading up to D-Day. — Brian Truitt, USA Today, 24 July 2026 See All Example Sentences for D-Day

Word History

Etymology

D, abbreviation for day

First Known Use

1918, in the meaning defined above

Time Traveler
The first known use of D-Day was in 1918

Rhymes for D-Day

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Browse Nearby Words

DD
D-Day
D-day force
See all Nearby Words

Cite this Entry

“D-Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/D-Day. Accessed 4 Sep. 2026.

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