Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym M-DAY is...

M-DAY is

  • (day Full Mobilization Is Declared)

M-DAY is also in:

Acronym Definition Searched: JT WNAN NOI CCCO RFI 13159 WEH 03812 AFI UER CARP TC MLDA 80533 GMT