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

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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
Investor attention is currently shifting toward a growing divergence within technology equities, as market capital rotates away from mega-cap tech giants and into the AI infrastructure supply chain. — CNBC, 28 Aug. 2026 However, Nvidia is also battling with significant supply constraints, much like all the other mega-cap tech companies. — Amanda Gerut, Fortune, 27 Aug. 2026 Now, Malone’s jeweler is sharing the details behind the mega sparkler, which weighs over 20 carats, according to Isaac Bokhoor and Sam Tack’s Angel City Jewelers. — Michelle Lee, PEOPLE, 27 Aug. 2026 The winning numbers were 25, 26, 30, 37 and 38, with a mega number of 23, the site said. — Don Sweeney, Sacbee.com, 27 Aug. 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 1 Sep. 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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