(n) magic number
(n) mass fashion
(n) mass movement
(n) Magellanic penguin (Spheniscus magellanicus)
(n) (1) Macintosh
(2) mackintosh (coat)
(P)
(n) money position
(n) marine ranching
(n) (comp) multiwindow
(adj-no) multiwindow
(n) multiscreen (system)
(n) (comp) multi-session
(n) (comp) multitasking
(adj-no) multichannel
(n) multivitamin
(n) (comp) MultiFinder
(n) (comp) multitasking
multi-tasking
(n) marron Chantilly
(n) man watching
(n) Munshingwear
(n) paying off one's entire credit card balance monthly
(n) mandarin collar
(n) Mandelbrot set
(n) Manhattan Project
(n) mammography
(n) mammoth tanker
(n) misfortune
(n) missing link (i.e. transitional fossil)
(n) (comp) Multum In Parvo mapping
MIP mapping
MIPMAP
(n) mitigation
(n) (comp) mini-computer