Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

brainiac

play
noun brain·i·ac \ˈbrā-nē-ˌak\

Simple Definition of brainiac

  • : a very intelligent person

Full Definition of brainiac

  1. :  a very intelligent person

Examples of brainiac

  1. <a techie who always has to have the latest gadget that the brainiacs in Silicon Valley have cooked up>



Origin of brainiac

probably from Brainiac, superintelligent villain in the Superman comic-book series


First Known Use: 1982


Learn More about brainiac


Seen and Heard

What made you want to look up brainiac? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 14, 2016

to hug and kiss another person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

196.5 pounds 16.96 pounds 2.2 pounds 100 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ