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

MGGM is

  • Maternal Great Grandfather

MGGM is also in:

Acronym Definition Searched: FAFCU WSDC NIP GSP YWF 03803 37034 47831 CBSE WTD JCSC WSRM RNA 23917 BC