cyclopentadiene

noun

cy·​clo·​pentadiene

plural -s

: a colorless liquid unsaturated cyclic hydrocarbon C₅H₆ that is obtained by distillation of coal tar, that polymerizes to its stable dimer on standing, and is used in making plastics and insecticides

Word History

Etymology

International Scientific Vocabulary cycl- + pentadiene (from pent- + di- + -ene)

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