Definition of notion
1a(1) : an individual's conception or impression of something known, experienced, or imagined
They had different notions of right and wrong.
(2) : an inclusive general concept
arriving at the notion of law— Irving Babbitt
(3) : a theory or belief held by a person or group
the notion of original sin
b : a personal inclination : whim He had a notion to try skydiving.
3 notions plural : small useful items : sundries found the thread she wanted among the shop's notions
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Time Traveler for notion
The first known use of notion was in 1531
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