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

GMAC is

Greater Miami Athletic Conference

More Meanings For GMAC:

Genetic Manipulation Advisory Committee
Glasgow Media Access Centre
Green Mountain Anarchist Collective
Genetic Manipulation Advisory Committee (Australia - obsolete, now GTTAC)
General Motors Acceptance Corporation
General Motors Acceptance Corporation
Graduate Management Admission Council
Greater Miami Athletic Conference

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