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brain wave

[ breyn-weyv ]
/ ˈbreɪn ˌweɪv /
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See synonyms for: brain wave / brain waves on Thesaurus.com

noun
Usually brain waves .Medicine/Medical. an electrical impulse given off by brain tissue, occurring at a frequency that varies according to mental state or activity, such as the slow waves associated with deep sleep and the fast waves associated with actively engaged thoughts and speech.Compare alpha rhythm, beta rhythm, delta rhythm.
Informal. a sudden idea or inspiration; brainstorm.
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Origin of brain wave

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use brain wave in a sentence

British Dictionary definitions for brain wave (1 of 2)

brainwave
/ (ˈbreɪnˌweɪv) /

noun
informal a sudden inspiration or ideaAlso called: brainstorm

British Dictionary definitions for brain wave (2 of 2)

brain wave

noun
any of the fluctuations of electrical potential in the brain as represented on an electroencephalogram. They vary in frequency from 1 to 30 hertzSee also alpha rhythm, beta rhythm, delta rhythm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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