The meaning of NOTION is an individual's conception or impression of something known, experienced, or imagined. How to use notion in a sentence. Synonym Discussion of Notion.

Idiom have/take a notion to do something (Definition of notion from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

NOTION definition: a general understanding; vague or imperfect conception or idea of something. See examples of notion used in a sentence.

Definition of notion noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A notion is an idea, often vague and sometimes fanciful. A notion is lighter than a theory and embraces a whimsy that a simple idea never could. You might have the notion that you can slow global …

A belief or opinion: had an old-fashioned notion of what qualities were most important in a mate. 2. A mental image; an idea or conception: Do you have any notion of what I'm referring to? See …

A notion is an idea or belief about something. We each have a notion of just what kind of person we'd like to be. I reject absolutely the notion that privatization of our industry is now inevitable.

There are 18 meanings listed in OED's entry for the noun notion, seven of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

vague or imperfect conception or idea of something: a notion of how something should be done. an opinion, view, or belief: That's his notion, not mine. conception or idea: his notion of democracy. …

Jan 20, 2026 · Noun notion (plural notions) Mental apprehension of whatever may be known, thought, or imagined; idea, concept.