D-Day

noun
\ ˈdē-(ˌ)dā How to pronounce D-Day (audio) \
variants: or D-day

Definition of 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

First Known Use of D-Day

1918, in the meaning defined above

History and Etymology for D-Day

D, abbreviation for day

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Time Traveler for D-Day

Time Traveler

The first known use of D-Day was in 1918

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Dictionary Entries near D-Day

DCL

dd

DD

D-Day

D-day force

ddC

DDC

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Statistics for D-Day

Cite this Entry

“D-Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/D-Day. Accessed 21 Jan. 2021.

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