Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym MM3 is...

MM3 is

  • Machinist's Mate Third Class

MM3 is also in:

Acronym Definition Searched: MHM JNJ VDM 92315 WJJW 63954 GIP HSFI SIS JNT SEEP USGR CPCH LAPS OLD