(usually plural) small personal articles or clothing or sewing items; "buttons and needles are notions"
a general inclusive concept
an odd or fanciful or capricious idea; "the theatrical notion of disguise is associated with disaster in his stories"; "he had a whimsy about flying to the moon"; "whimsy can be humorous to someone with time to enjoy it"
the state of being crude and incomplete and imperfect; "the study was criticized for incompleteness of data but it stimulated further research"; "the rawness of his diary made it unpublishable"
a belief that can guide behavior; "the architect has a theory that more is less"; "they killed him on the theory that dead men tell no tales"
a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; "theories can incorporate facts and laws and tested hypotheses"; "true in fact and theory"
the property of being an amount by which something is less than expected or required; "new blood vessels bud out from the already dilated vascular bed to make up the nutritional deficit"
an excess of liabilities over assets (usually over a certain period); "last year there was a serious budgetary deficit"
(sports) the score by which a team or individual is losing
a deficiency or failure in neurological or mental functioning; "the people concerned have a deficit in verbal memory"; "they have serious linguistic deficits"