Meg

Electricity.
1.
megohm; megohms.
[meg] /mɛg/ Informal.
noun
1.
a megabyte.
[meg] /mɛg/
noun
1.
a female given name, form of .
1.
.
1.
variant of (megalith); also the initial element in units of measure that are equal to one million of the units denoted by the base word (megahertz). Symbol: M.
/mɛɡ/
noun
1.
(informal) short for megabyte
combining form
1.
denoting 106: megawatt, M
2.
(in computer technology) denoting 220 (1 048 576): megabyte
3.
large or great: megalith
4.
(informal) great in importance or amount: megastar

fem. proper name; before the late 20c. rise in popularity of Megan it typically was a pet form of Margaret, and was “used dial. to indicate a hoyden, coarse woman, etc.” [OED]

before vowels meg-, word-forming element often meaning “large, great,” but in precise scientific language “one million” (megaton, megawatt, etc.), from Greek megas “great, large, vast, big, high, tall; mighty, important” (fem. megale), from PIE *meg- “great” (cf. Latin magnus, Old English micel; see mickle). Mega began to be used alone as an adjective by 1982.

High-speed computer stores 2.5 megabits [headline in “Electronics” magazine, Oct. 1, 1957]

mega- pref.

mega-

megabyte
1.
megabyte
2.
megohm
magnetoencephalogram