mega

1 of 2

adjective

ˈme-gə 

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

Adjective

• huge
• giant
• gigantic
• massive
• colossal
• vast
• enormous
• tremendous
• mammoth
• monumental
• astronomical
• immense
• bumper
• big
• monster
• titanic

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

Adjective

The winning numbers were 5, 8, 10, 22 and 45, with a mega number of 4, the site said. —Don Sweeney, Sacbee.com, 8 June 2026

Our concern — as Jim Cramer explained in his Sunday column — is that the market will struggle to absorb supply from three upcoming mega initial public offerings (IPOs) and potentially additional funding-raising stock sales from hyperscalers. —Jeff Marks, CNBC, 8 June 2026

Pace Gallery, a mega gallery with seven locations worldwide, is laying off some 50 staff and dropping about 50 artists. —Devorah Lauter, ARTnews.com, 4 June 2026

The decision to dictate one price target, as opposed to offering a range, is a unique move that reflects the hot IPO market around the AI craze and Musk’s own tendency for mega-scale goals. —Chris Isidore, CNN Money, 3 June 2026

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

Rhymes for mega

• omega

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"