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pentachloronitrobenzene

American  
[pen-tuh-klawr-oh-nahy-troh-ben-zeen, -ben-zeen, -klohr-] / ˌpɛn təˌklɔr oʊˌnaɪ troʊˈbɛn zin, -bɛnˈzin, -ˌkloʊr- /

noun

Chemistry.

  1. a crystalline compound, C 6 Cl 5 NO 2 , used as an herbicide and insecticide. PCNB

Etymology

Origin of pentachloronitrobenzene

penta- + chloro- 2 + nitrobenzene

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.