cyclopentadiene

[ sahy-kluh-pen-tuh-dahy-een, sik-luh- ]
/ ˌsaɪ kləˌpɛn təˈdaɪ in, ˌsɪk lə- /

noun

a colorless liquid, C5H6, derived by the distillation of coal tar: used chiefly in the manufacture of insecticides and resins.

Origin of cyclopentadiene

British Dictionary definitions for cyclopentadiene

cyclopentadiene
/ (ˌsaɪkləʊˌpɛntəˈdaɪiːn) /

noun

a colourless liquid unsaturated cyclic hydrocarbon obtained in the cracking of petroleum hydrocarbons and the distillation of coal tar: used in the manufacture of plastics and insecticides. Formula: C 5 H 6