What does D-Day stand for?

D-Day stands for "Day in which a particular operation begins"

How to abbreviate "Day in which a particular operation begins"?

"Day in which a particular operation begins" can be abbreviated as D-Day

What is the meaning of D-Day abbreviation?

The meaning of D-Day abbreviation is "Day in which a particular operation begins"

What does D-Day mean?

D-Day as abbreviation means "Day in which a particular operation begins"