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: MJ Satu Mare BV USSOCOM GLBL GNS 20701 67146 WHH MDIF JD 18062 28705 15778 TTQ 61941