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

Hartsfield-Jackson was tied with George Bush Intercontinental Airport in Houston in customer satisfaction, both receiving 606 points out of a possible 1,000, below average for mega airports. — Mirtha Donastorg, AJC.com, 16 Sep. 2026

The 2026 North America Airport Satisfaction Study found that overall airport satisfaction increased by 14 points for mega airports on a 1,000-point scale, even amid high passenger volume. — Nathan Diller, USA Today, 16 Sep. 2026

But the arrival of mega-rich superteams in the past decade has relegated Movistar and many other former successful teams to hopeful participants in most of the big races. — Chris Marshall-Bell, New York Times, 14 Sep. 2026

The mega-cap tech companies based here command an increasingly massive weight in US equity markets. — CNBC, 14 Sep. 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"