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

And entering this week, a consensus is coalescing around the idea that last week's tentative firming in the majority of stocks will bail out investors not fully committed to the mega-cap leaders. — Michael Santoli, CNBC, 13 Oct. 2026

Over the last two years, AI has enabled the creation of mega botnets with access to hundreds of thousands and even millions of machines. — Carlos Morales, Forbes.com, 13 Oct. 2026

Since the turn of the millennium, Latin America has become a hotbed of electronic dance music, warping countless homegrown rhythms at block parties, bedrooms, and mega clubs across the region. — Richard Villegas, Rolling Stone, 12 Oct. 2026

With the league’s mega TV deal and the growth prospects domestically and internationally, the business of the league is starting to mirror that of the NFL—and investors are clamoring to secure a part of it. — Kurt Badenhausen, Sportico.com, 9 Oct. 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"