Source : WordNet®

PM
     adv : between noon and midnight; "let's meet at 8 P.M." [syn: {post
           meridiem}, {P.M.}]

Source : Free On-Line Dictionary of Computing

PM
     
        1. {preventive maintenance}.
     
        2. {Presentation Manager}
     
        3. ["PM, A System for Polynomial Manipulations", G.E. Collins,
        CACM 9(8):578-589 (Aug 1966)].
     
        [{Jargon File}]

pm
     
         The {country code} for St. Pierre and Miquelon.
     
        (1999-01-27)