brain wave: meaning, definition, pronunciation and examples
C1Both formal (technical) and informal (figurative)
Quick answer
What does “brain wave” mean?
A rhythmic pattern of electrical activity in the brain, as measured by an electroencephalogram (EEG).
Audio
Pronunciation
Definition
Meaning and Definition
A rhythmic pattern of electrical activity in the brain, as measured by an electroencephalogram (EEG).
A sudden clever idea or insight; a mental inspiration.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling follows national conventions: 'brainwave' (BE, often as one word), 'brain wave' (AE, often as two words). The figurative use may be slightly more informal in BE.
Connotations
Identical in both. Technical use is neutral; figurative use is positive, suggesting spontaneous cleverness.
Frequency
The figurative sense is common in everyday speech in both varieties. The technical sense is, naturally, confined to medical/neuroscientific contexts.
Grammar
How to Use “brain wave” in a Sentence
have + a + brain waveexperience + a + brain wavemeasure + brain wavesbrain wave + associated with + state (e.g., sleep)Vocabulary
Collocations
Examples
Examples of “brain wave” in a Sentence
verb
British English
- The team is trying to brainwave a solution.
- (Note: 'brainwave' as a verb is very rare and informal in BE)
American English
- (Verb form 'to brainwave' is virtually unused in AE. Use 'to brainstorm' instead.)
adverb
British English
- (No standard adverbial form)
American English
- (No standard adverbial form)
adjective
British English
- He had a brainwave moment in the shower.
- (Rare, adjectival use is informal and non-standard)
American English
- The brain wave activity was recorded. (Here 'brain wave' is a noun adjunct, not a true adjective.)
Usage
Meaning in Context
Business
"In a brainstorming session, she had a real brain wave that solved our marketing dilemma."
Academic
"The study correlated specific brain wave patterns with stages of deep sleep."
Everyday
"Wait, I've just had a brain wave—let's take the train instead of driving!"
Technical
"Delta brain waves (0.5–4 Hz) are predominant during slow-wave sleep."
Vocabulary
Synonyms of “brain wave”
Vocabulary
Antonyms of “brain wave”
Watch out
Common Mistakes When Using “brain wave”
- Using the technical term in casual conversation where 'idea' or 'thought' would be more natural, leading to a pretentious or odd tone. Confusing 'brain wave' with 'brainstorm' (which is a process, not a single idea).
FAQ
Frequently Asked Questions
Both are acceptable. British English often uses the closed compound 'brainwave', especially for the figurative sense. American English more commonly uses the open compound 'brain wave', particularly for the technical sense.
No, it is not standard. The correct verb for the process of generating ideas is 'to brainstorm'. 'Brainwave' as a verb is rare, informal, and not recommended.
A 'brain wave' is a single, sudden clever idea. A 'brainstorm' (noun) is a session for generating many ideas, or (verb) the act of generating ideas rapidly. A brain wave might occur *during* a brainstorm.
No, the figurative use ('a sudden clever idea') is informal. In formal writing, use terms like 'insight', 'idea', or 'inspiration'. The technical use ('neural oscillation') is formal and scientific.
A rhythmic pattern of electrical activity in the brain, as measured by an electroencephalogram (EEG).
Brain wave: in British English it is pronounced /ˈbreɪn weɪv/, and in American English it is pronounced /ˈbreɪn ˌweɪv/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “To have a brain wave”
Learning
Memory Aids
Mnemonic
Think of your BRAIN sending out a radio WAVE when it gets a clever idea.
Conceptual Metaphor
THE MIND IS A TRANSMITTER (sending out waves/ideas). IDEAS ARE WAVES (that suddenly arrive).
Practice
Quiz
Which of the following is a CORRECT use of 'brain wave'?