a white, crystalline, water-insoluble compound, C12H9N, 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: C 12 H 9 NAlso called: diphenylenimine (daɪˌfiːnaɪˈlɛnɪmiːn)
