brainiac
noun/ˈbreɪniæk/
/ˈbreɪniæk/
(North American English, informal)- a very intelligent person
- A team of brainiacs are here to answer your scientific questions.
- Brainiacs from around the world take part in the contest.
Word OriginFrom the name of a character in the Superman stories.Definitions on the go
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brainiac