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Definitions

D-day

[dee-dey] / ˈdiˌdeɪ /
NOUN
target date
Synonyms
WEAK
A-day H-hour deadline target day term terminal date time allotment time frame zero hour
NOUN
zero hour
Synonyms
WEAK
A-day H-hour appointed hour climax contingency countdown crisis crisis point crossroad crossroads crunch time deadline emergency exigency jumping-off point juncture moment of truth pinch pivotal moment start time strait target target day the time turning point vital moment

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Alfie Booker still remembers the noises, smells and smoke from D-day.

From BBC • Jun. 5, 2024

Griffin’s father, Edgar G. Griffin, born in Mexico to an Irish family, was a 101st Airborne paratrooper who survived the Normandy landing on D-day and was awarded a Purple Heart.

From Los Angeles Times • Feb. 21, 2024

James should have been part of the U.S. forces that invaded the beaches of Normandy, France, for D-day in June 1944.

From Los Angeles Times • Feb. 10, 2022

In late 2020, as Flash D-day drew near, supporters scrambled to rescue it.

From Slate • Feb. 5, 2021

Iwo Jima wasn’t just “softened up” for a few days before D-day.

From "Code Talker: A Novel About the Navajo Marines of World War Two" by Joseph Bruchac

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.