1782, from Fr. deficit (1690), from L. deficit "it is wanting," an introductory word in clauses of inventory, third pers. sing. pres. indicative of deficere "to be deficient" (see deficient).
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"
2.
a deficiency or failure in neurological or mental functioning; "the people concerned have a deficit in verbal memory"; "they have serious linguistic deficits"
3.
(sports) the score by which a team or individual is losing [ant: lead]
4.
an excess of liabilities over assets (usually over a certain period); "last year there was a serious budgetary deficit"
De*fect"\, n. [L. defectus, fr. deficere, defectum, to desert, fail, be wanting; de- + facere to make, do. See Fact, Feat, and cf. Deficit.]1. Want or absence of something necessary for completeness or perfection; deficiency; -- opposed to superfluity. Errors have been corrected, and defects supplied. --Davies. 2. Failing; fault; imperfection, whether physical or moral; blemish; as, a defect in the ear or eye; a defect in timber or iron; a defect of memory or judgment. Trust not yourself; but, your defects to know, Make use of every friend -- and every foe. --Pope. Among boys little tenderness is shown to personal defects. --Macaulay. Syn: Deficiency; imperfection; blemish. See Fault.