Abbreviation of Minnesota, a state of the United States of America.

(medicine) Abbreviation of master of/in nursing. / (Philippines) Abbreviation of midnight.

Abbreviation of Monday.

Abbreviation of million.

(Internet slang, text messaging) Abbreviation of mean.

(chemistry) manganese(II) sulfide

plural of MN

(plural only) The study of techniques for remembering anything more easily.

plural of mnemonic

Of or relating to mnemonics: the study of techniques for remembering anything more easily. / Of or relating to memory.