Meaning of “brainstorm” in the English Dictionary

(Definition of “brainstorm” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"brainstorm" in American English

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brainstormverb [ I/T ]

us /ˈbreɪnˌstɔrm/

to suggest a lot of ideas for a future activity very quickly before considering some of them more carefully:

[ I ] They brainstormed and mapped plans for dealing with problems like affordable housing and the budget shortfall.
noun [ U ] us /ˈbreɪnˌstɔr·mɪŋ/

We need to do some brainstorming before we get down to detailed planning.

brainstormnoun [ C ]

us /ˈbreɪnˌstɔrm/ infml

a sudden, new idea that you are enthusiastic about:

They got this brainstorm that they could make a living by buying and selling antiques.

(Definition of “brainstorm” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"brainstorm" in Business English

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brainstormverb [ I or T ]

uk /ˈbreɪnstɔːm/ us

MEETINGS to meet in a group to suggest a lot of new ideas very quickly, with the intention of considering them more carefully later:

Engineers from all over the company met every couple of weeks to brainstorm.
Remember all ideas are welcomed - so start brainstorming!
A team will brainstorm a job description for the new leadership post.

brainstormnoun [ C ]

uk /ˈbreɪnstɔːm/ us

a new, original idea or set of ideas:

They have started to turn their brainstorm into a real product.

(Definition of “brainstorm” from the Cambridge Business English Dictionary © Cambridge University Press)