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brainstorming

noun [U]
 
 
/ˈbreɪnˌstɔː.mɪŋ/ US  /-ˌstɔːr-/

Definition

an activity or business method in which a group of people meet to suggest a lot of new ideas for possible development: We need to do some brainstorming before we get down to detailed planning. We're having a brainstorming session on Friday.Suggestions and proposals
(Definition of brainstorming noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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