/ Dictionary / Index N nit: Meaning and Definition of Find definitions for: nit Pronunciation: (nit), [key] — n. the egg of a parasitic insect, esp. of a louse, often attached to a hair or a fiber of clothing. the young of such an insect. nit Pronunciation: (nit), [key] — n. Physics. a unit of luminous intensity equal to one candela per square meter. Abbr.: nt nit Pronunciation: (nit), [key] — n. Chiefly Brit. a nitwit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nit (Thesaurus) nisus nitchie Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language