mega-

SEE MORE SYNONYMS FOR mega- ON THESAURUS.COM

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

Nearby words

mefenamic acid, meff, mefloquine, meg, mega, mega-, megabacterium, megabit, megabladder, megabuck, megabyte

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

Examples from the Web for 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|DAILY BEAST
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|DAILY BEAST
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|DAILY BEAST
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|DAILY BEAST

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|DAILY BEAST
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 (1 of 2)

mega

/ (ˈmɛɡə) /

adjective

slang extremely good, great, or successful

Word Origin for mega

C20: probably independent use of mega-

British Dictionary definitions for mega (2 of 2)

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

Medicine definitions for mega

mega-

pref.

Large:megacephaly.

One million (106):megahertz.

Science definitions for mega

mega-

A prefix that means:

Large, as in megadose, a large dose.

One million, as in megahertz, one million hertz.

220 (that is, 1,048,576), which is the power of 2 closest to a million, as in megabyte.