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cyclopentadiene

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

noun

  1. a colorless liquid, C 5 H 6 , derived by the distillation of coal tar: used chiefly in the manufacture of insecticides and resins.

cyclopentadiene British  
/ ˌsaɪkləʊˌpɛntəˈdaɪiːn /

noun

  1. 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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of cyclopentadiene

cyclo- + penta- + diene ( def. )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.