brain·​i·​ac | \ ˈbrā-nē-ˌak How to pronounce brainiac (audio) \

Definition of brainiac

: a very intelligent person

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Did You Know?

As Superman fans know, "Brainiac" was the superintelligent villain in the Action Comics series and its spin-offs. You don't need x-ray vision to see the connection here - etymologists think Superman's brainy adversary was probably the inspiration for our term "brainiac." We didn't coin the term right away though. The comic-book series was launched in 1938, and the general use of "brainiac" was first recorded in print in 1982.

Examples of brainiac in a Sentence

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

Recent Examples on the Web

Just the title was about the highest brainiac accolade that could be conferred. Karen Heller, Washington Post, "The hard-charging space program: Breakthroughs, breakdowns and breakneck," 18 June 2019 In no time, this brainiac’s wrestling aliens and free soloing up a rocky cliff. Darren Franich,, "Chris Hemsworth and Tessa Thompson reunite for eerily bland Men in Black: International: EW review," 12 June 2019 In Israel, Max meets eight other junior brainiacs who have gathered, like her, to save the planet. Meghan Cox Gurdon, WSJ, "Children’s Books: Survivors and Strivers," 18 Oct. 2018 Jakeyla’s best friend, Samiyah Zeigler — also a 2018 Ballou graduate — said Jakeyla is know as the brainiac on campus. Perry Stein, Washington Post, "‘The sky’s the limit now’: A graduation, and a statement about a troubled school," 12 June 2018 This year, Amazon lifted the veil and invited a handful of reporters into Mr. Bezos’s brainiac pow-wow. Jack Nicas, New York Times, "At Mars, Jeff Bezos Hosted Roboticists, Astronauts, Other Brainiacs and Me," 22 Mar. 2018 The shiny object was Charles Edward Kelly, a 49-year-old college football brainiac, who led the Oregon Ducks to a 46-7 record in his four seasons as head coach, including a BCS bowl appearance each year. Bob Ford,, "The Phillies are now a modern baseball team. But too much change could make them like Chip Kelly's Eagles | Bob Ford," 29 Mar. 2018 Mayim Bialik is super smart in real life too Bialik, whose character is a brainiac, got accepted to both Harvard and Yale. Fox News, "Things you might not know about the ladies of 'The Big Bang Theory'," 26 Mar. 2018 Founded in 1985, the Qualcomm image is less a collection of swashbuckling capitalists looking to extend market share and more an assemblage of determined brainiacs looking to invent the next generation of mobile technology. Rob Nikolewski,, "Why the fight between Qualcomm and Broadcom matters to consumers," 2 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brainiac.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of brainiac

1975, in the meaning defined above

History and Etymology for brainiac

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

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Statistics for brainiac

Last Updated

21 Jun 2019

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Time Traveler for brainiac

The first known use of brainiac was in 1975

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English Language Learners Definition of brainiac

informal : a very intelligent person

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