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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Secretary Hegseth seemed in his remarks to link immigration to the legacy of the D-Day landings by Allied forces who were liberating Europe from the Nazis. CBS News, 7 June 2026 Only when thousands of planes and landing craft approached five Normandy beaches more than 100 miles to the west did the Nazis realize the invasion—D-Day, June 6, 1944—was under way. Kevin Maurer, The Atlantic, 6 June 2026 Eisenhower, in particular, felt the magnitude of D-day. Emily Zemler, Los Angeles Times, 29 May 2026 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 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 13 Jun. 2026.

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