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
Alessandra Schade, Time, 14 Feb. 2026
Thanks to a mega-viral video of Will taking on Mane Attraction (Aaron Pierre), an Andalusian horse and a rival roarball player on the Lava Court Magmas, in impromptu pick-up game.
—Payton Turkeltaub, Variety, 13 Feb. 2026
The mega coffee house chain is providing financial support to emerging designers Area, Collina Strada, Eckhaus Latta, Sergio Hudson and Zankov to further their design and marketing efforts.
—David Moin, Footwear News, 11 Feb. 2026
Notable mega deals, including the $40 billion acquisition of Aligned Data Centers LLC, significantly contributed to this total.
—Sheryl Estrada, Fortune, 9 Feb. 2026
See All Example Sentences for mega
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Adjective
Against this backdrop, Daniels’ image of Liam’s seizure went mega-viral at a moment when public anger over immigration enforcement was already acute in Minnesota and elsewhere across the country—the incalculable, inescapable kind of viral in which images move faster than explanation.
—Alessandra Schade, Time, 14 Feb. 2026
Thanks to a mega-viral video of Will taking on Mane Attraction (Aaron Pierre), an Andalusian horse and a rival roarball player on the Lava Court Magmas, in impromptu pick-up game.
—Payton Turkeltaub, Variety, 13 Feb. 2026
The mega coffee house chain is providing financial support to emerging designers Area, Collina Strada, Eckhaus Latta, Sergio Hudson and Zankov to further their design and marketing efforts.
—David Moin, Footwear News, 11 Feb. 2026
Notable mega deals, including the $40 billion acquisition of Aligned Data Centers LLC, significantly contributed to this total.
—Sheryl Estrada, Fortune, 9 Feb. 2026
See All Example Sentences for mega
Cite this Entry
“Mega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mega. Accessed 15 Feb. 2026.
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