mega

1 of 2

adjective

ˈme-gə How to pronounce mega (audio)
Synonyms of mega
1
: vast
a mega electronics store
2
: of the highest level of rank, excellence, or importance
a number one hit made her mega

mega-

2 of 2

combining form

variants or meg-
1
a
: great : large
megaspore
b
: greatly surpassing others of its kind
megahit
2
: million (106)
megohm
megacycle

Synonyms of mega

Relevance

Adjective

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Examples of mega in a Sentence

Adjective 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The philosopher, historian, and author of mega-selling books Yuval Noah Harari has given the campaign his personal endorsement. — Kamal Ahmed, Fortune, 30 July 2026 Being early wasn't enough—being early and sized like an index-moving mega-cap position was the actual trade, and almost nobody was positioned for both. — Carrie McCabe, Forbes.com, 28 July 2026 Producers announced the news on the 42nd anniversary of the movie, which became a box office hit with nearly $100 million worldwide and inspired the mega-selling album of the same name. — Rebecca Rubin, Variety, 27 July 2026 Futures tied to the S&P 500 dropped in early trading on Tuesday, with investors bracing for a big week of mega-cap earnings and a Federal Reserve rate decision. — Joseph Wilkins,justina Lee,sarah Min, CNBC, 27 July 2026 See All Example Sentences for mega

Word History

Etymology

Adjective

mega-

Combining form

Greek, from megas large — more at much

First Known Use

Adjective

1968, in the meaning defined at sense 1

Time Traveler
The first known use of mega was in 1968

Rhymes for mega

See All Rhymes for mega

Browse Nearby Words

MEG
mega
mega-
See all Nearby Words

Cite this Entry

“Mega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mega. Accessed 5 Aug. 2026.

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Kids Definition

mega-

combining form
variants or meg-
1
: great : large
megaspore
2
: million : multiplied by one million
megahertz
3
: to the highest or greatest degree
mega-successful
Etymology

Combining form

from Greek megas "large"

Last Updated: - Updated example sentences
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