a white, crystalline, water-insoluble compound, C 12 H 9 N, usually found along with anthracene in coal tar, or synthesized: used chiefly in the manufacture of dyes.
a colourless insoluble solid obtained from coal tar and used in the production of some dyes. Formula: C12H9N Also called diphenylenimine (daɪˌfiːnaɪˈlɛnɪmiːn)
