\ ˈme-gə \

Definition of mega 

(Entry 1 of 2)

1 : vast a mega electronics store

2 : of the highest level of rank, excellence, or importance a number one hit made her mega

variants: or meg-

Definition of mega- (Entry 2 of 2)

1a : great : large megaspore

b : greatly surpassing others of its kind megahit

2 : million (106) megohm megacycle

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Examples of mega in a Sentence


an actor who has become a mega celebrity I will never understand why people build those mega houses on tiny lots.

Recent Examples on the Web: Adjective

By Marvel standards, the film is reductionist in every way, and what's at stake couldn't be further from what lies in the balance at the conclusion of the studio's recent mega-blockbuster Avengers: Infinity War. Graeme Mcmillan, The Hollywood Reporter, "'Ant-Man and The Wasp': What the Critics Are Saying," 27 June 2018 The former British colony is a small place, and the stock of billionaire-worthy residences hasn’t kept pace with the exploding ranks of mega-rich mainland buyers. Eamon Barrett, Fortune, "Here's Where the Billionaire Founders of Alibaba and Tencent Bought Homes in Hong Kong," 21 June 2018 For artists, Detroit is a city-sized canvas that offers more opportunity than opposition for the chance to paint their next mega-sized masterpiece on the side of a building. Ryan Patrick Hooper, Detroit Free Press, "Art or advertisement? In downtown Detroit, answers lie in shades of gray," 29 Apr. 2018 After looking at other mega-sized entertainment parks in adjacent states, Knott’s Berry said an 35-acre amusement park would not be feasible. Dawn Mitchell, Indianapolis Star, "Bankruptcy doomed giant Hendricks County complex in 1990s that included a Garfield-themed park," 27 Apr. 2018 The ever-spiraling Fox mega-deal arrives at a heady time for the entertainment industry. Yohana Desta, HWD, "Disney Just One-Upped Comcast in the Battle for Fox," 20 June 2018 Both of these people come out of Joel Osteen’s Lakewood mega-church, the one that initially declined to allow the victims of Hurricane Harvey to befoul its sanctuary. Charles P. Pierce, Esquire, "The Best People, Church Grifter Edition," 19 Mar. 2018 Such abuse can happen anywhere—from small Bible-study groups to mega-churches, the experts say. Max Kutner, Newsweek, "Church Beating Death Brings Abusive Fringe-Churches to Forefront," 16 Oct. 2015 In the high-stakes world of corporate mega-mergers, the fate of billions of dollars can come down to something as simple as a nice piece of art and some knowledge of how people operate. NBC News, "Wine and Wimbledon: The personal touch in courting corporate mergers," 10 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mega.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mega


1968, in the meaning defined at sense 1

History and Etymology for mega



Combining form

Greek, from megas large — more at much

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Dictionary Entries near mega








Statistics for mega

Last Updated

13 Sep 2018

Look-up Popularity

Time Traveler for mega

The first known use of mega was in 1968

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English Language Learners Definition of mega

 (Entry 1 of 2)

: very large

: very popular, successful, or important

English Language Learners Definition of mega- (Entry 2 of 2)

: great : large

: extremely

: million : multiplied by one million

More from Merriam-Webster on mega

Thesaurus: All synonyms and antonyms for mega

Britannica English: Translation of mega for Arabic Speakers

Comments on mega

What made you want to look up mega? Please tell us where you read or heard it (including the quote, if possible).


to deposit or conceal in a hiding place

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