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
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The opening act will include a Douglas C-47 Skytrain — the aircraft that dropped paratroopers over Normandy on D-Day — and the Air Force’s Wings of Blue parachute team. Sally Krutzig, Idaho Statesman, 14 May 2026 In 2019, Hanks reflected on the lasting significance of Saving Private Ryan in an interview with NBC News, emphasizing the importance of remembering the individuals who sacrificed their lives during D-Day and throughout the war. Lizzie Hyman, PEOPLE, 9 May 2026 During his first year at the University of Florida, after the Allied force’s D-Day invasion of Normandy in late 1944, he was drafted to serve in World War II after the Battle of the Bulge. Howard Cohen, Miami Herald, 15 Apr. 2026 In this show, moon landings, D-Day and the Chicago World’s Fair have equal importance to the emergence and clarification of rights for Blacks, Latinos, women, union workers, LGBT folks and members of the press. Ray Mark Rinaldi, Denver Post, 16 Feb. 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

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Cite this Entry

“D-Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/D-Day. Accessed 21 May. 2026.

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