what does nit mean
The noun NIT has 2 senses: 1. a luminance unit equal to 1 candle per square meter measured perpendicular to the rays from the source. 2. egg or young of an insect parasitic on mammals especially a sucking louse; often attached to a hair or item of clothing.Familiarity information: NIT used as a noun is rare.Dictionary entry details.ypernyms (nit is a kind of...): egg (animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds).