notion Definition in the Cambridge English Dictionary
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Definition of “notion” - English Dictionary

Definition of "notion" - American English Dictionary

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notionnoun [C]

 us   /ˈnoʊ·ʃən/
a ​belief or ​idea: Nast ​helpedform the American notion of ​SantaClaus.
(Definition of notion from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "notion" - British English Dictionary

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notionnoun [C or U]

uk   /ˈnəʊ.ʃən/  us   /ˈnoʊ-/
C1 a ​belief or ​idea: [+ that] The show's ​directorrejects the notion thatseeingviolence on ​television has a ​harmfuleffect on ​children. I have only a vague notion of what she does for a ​living.
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notion noun [C or U] (FOR SEWING)

notions [plural] US (UK haberdashery) cloth, ​pins, ​thread, etc. used for ​sewing, or a ​shop or a ​department of a ​largestore that ​sells these
(Definition of notion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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