D-DAY • DICTIONARY ONE.COM • Definition of D-day

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noun

D-day n.

(Mil.) The day designated for the beginning of a planned attack by a military force; in communications the day is often otherwise unspecified for security reasons; as, the day before D-day the troops will move into position.

6 June 1944, the day of the landing in France, by troops allied against the Germans in World War II.

Synonyms: 6 June 1944.

The day for commencement or execution of any elaborate planned activity; often used jocosely. (informal)

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Etymology of 'D-day'

Collaborative International Dictionary of English 0.48

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Words linked to "D-day" : date, day of the month, 6 June 1944