/thuy"euh feen'/ , n. Chem.
a water-insoluble, colorless liquid, C 4 H 4 S, resembling benzene, occurring in crude coal-tar benzene: used chiefly as a solvent and in organic synthesis.
Also, thiophen /thuy"euh fen'/ .
[ 1880-85; THIO- + -phene, word-final var. of PHEN- ]