Definition of "MM"
MM
noun
plural MMs
(education) Initialism of Master of Music.
(education) Initialism of Master of Management.
(Freemasonry) Initialism of Master Mason.
(amateur radio) Initialism of maritime mobile.
(aviation) Initialism of middle marker.
(philately) Initialism of mounted mint.
(finance) Abbreviation of million.
(finance) Initialism of market maker.
(mathematics) Initialism of mathematical morphology.
(numismatic slang) Initialism of mintmark.