mega - technical definition

(1) Million (10 to the 6th power). Abbreviated "M". In communications, mega typically refers to 1,000,000. In storage, mega typically refers to 1,048,576. See MB, binary values and space/time.

(2) A prefix attached to words that means a very large size or quantity. For example, "megabucks" means a lot of money. See giga.

(3) (MEGA) A personal computer series from Atari that was Motorola 68000 based, ran under GEM and the TOS operating system and included a MIDI interface. It was ST compatible.