mega-

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variant of megalo- (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

Also especially before a vowel, meg-.

Origin of mega-

combining form representing Greek mégas large, great

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for mega

enough, enormous, tremendous, humongous, colossal, monumental, whopping, gigantic, considerable, vast, sizeable, noble, grandiose, stately, striking, commanding, magnificent, imperial, massive, grand

Examples from the Web for mega

Contemporary Examples of mega

We have reached a tipping point where mega donors completely dominate the landscape.
The 100 Rich People Who Run America
Mark McKinnon
January 5, 2015
And who can blame them for feeling disenfranchised when they see their efforts dwarfed by the mega donors.
The 100 Rich People Who Run America
Mark McKinnon
January 5, 2015
This was the young, telegenic, and popular Robby Gallaty of Brainerd Baptist (mega-)Church in Tennessee.
The Hateful Pastor All Too Happy to Be Left Behind When It Comes to Gays
Jay Michaelson
September 6, 2014
They got their name (which means “mega tooth”) from their enormous teeth, each of which could be greater than six inches long.
Shark Week Is Lying Again: Megalodon Is Definitely Extinct
David Shiffman
August 15, 2014
Instead, after Citizens United, the mega donors set up their own shadow parties.
Is Big Money Politics an Overblown Evil?
David Freedlander
August 2, 2014

Historical Examples of mega

As this letter A is formed by a larger aperture than the former one, it may be called A mega.
The Temple of Nature; or, the Origin of Society
Erasmus Darwin.

British Dictionary definitions for mega

mega

adjective

slang extremely good, great, or successful

Word Origin for mega

C20: probably independent use of mega-

mega-

combining form

denoting 10 6megawatt Symbol: M

(in computer technology) denoting 2 20 (1 048 576)megabyte

large or greatmegalith

informal great in importance or amountmegastar

Word Origin for mega-

from Greek megas huge, powerful

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mega

mega-

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.