1
: vast
a mega electronics store
2
: of the highest level of rank, excellence, or importance
a number one hit made her mega
variants
or meg-
1
a
: great : large
megaspore
b
: greatly surpassing others of its kind
megahit
2
: million (106)
megohm
megacycle
Synonyms of mega
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
Lee Ying Shan, CNBC, 31 Dec. 2025
Market gains are beginning to broaden beyond mega-cap technology firms, the largest and most heavily weighted companies in major stock indexes.
—Brian Blank, The Conversation, 29 Dec. 2025
Put together the Hulk Truck, which features a lift-off cab so our hero can fit behind the wheel, mega suspension, and actual spinning wheels.
—Mia Huelsbeck, PEOPLE, 26 Dec. 2025
The Tianshan Shengli Tunnel might seem like a minor project compared to these mega projects.
—Ameya Paleja, Interesting Engineering, 26 Dec. 2025
See All Example Sentences for mega
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Adjective
While its modest 16% gains were eclipsed by other major markets in 2025, per Morningstar data, the S & P 500 and Nasdaq surged to fresh highs, driven by mega-cap technology firms.
—Lee Ying Shan, CNBC, 31 Dec. 2025
Market gains are beginning to broaden beyond mega-cap technology firms, the largest and most heavily weighted companies in major stock indexes.
—Brian Blank, The Conversation, 29 Dec. 2025
Put together the Hulk Truck, which features a lift-off cab so our hero can fit behind the wheel, mega suspension, and actual spinning wheels.
—Mia Huelsbeck, PEOPLE, 26 Dec. 2025
The Tianshan Shengli Tunnel might seem like a minor project compared to these mega projects.
—Ameya Paleja, Interesting Engineering, 26 Dec. 2025
See All Example Sentences for mega
Cite this Entry
“Mega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mega. Accessed 2 Jan. 2026.
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