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idea

 
/ɑɪˈdi·ə/ n [C/U] (KNOWLEDGE)

Definition

knowledge or understanding about something: [C] Can you give me a rough idea of the cost (= tell me approximately how much it will cost)? [U] You have no idea what I just said, do you?
(Definition of idea n (KNOWLEDGE) from the Cambridge Academic Content Dictionary © Cambridge University Press)

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