mega

1 of 2

adjective

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

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
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Adjective
These mega-popular joggers are 20 percent off in black and red, bringing the price down to just $8 in both colors. Melony Forcier, PEOPLE, 14 Oct. 2025 Its membership includes theatres of all sizes, from the mega circuits to one-screen theatres in cities and towns around the world. Pamela McClintock, HollywoodReporter, 14 Oct. 2025 Ken’s dream was to end his 30-year career with a big jump, a big paycheck, and mega stardom. Matt Grobar, Deadline, 14 Oct. 2025 Scroll on for other staple pieces from the Kate Spade Outlet that are mega-discounted for a limited time, like a stadium-ready clear tote and a glittery shoulder bag. Mariana Best, Better Homes & Gardens, 11 Oct. 2025 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

Browse Nearby Words

Cite this Entry

“Mega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mega. Accessed 17 Oct. 2025.

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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