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brainiac
Definitions
[ˈbreɪnɪak], (Noun)
Definitions:
- an exceptionally intelligent person
(e.g: she's the original brainiac, a kid who completed high school at 14)
Phrases:
Origin
:
1970s: from the name of a supremely intelligent alien character in the Superman comic strip, probably from a blend of brain and maniac
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definition by Oxford Dictionaries