nit has definitions from the fields of biology,zoology,physics
1
[ noun ] (physics) a luminance unit equal to 1 candle per square meter measured perpendicular to the rays from the source

Related terms

luminance_unit

2
[ noun ] (biology,zoology) egg or young of an insect parasitic on mammals especially a sucking louse; often attached to a hair or item of clothing

Related terms

egg

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