[par-uh-dahy-klawr-uh-ben-zeen, -ben-zeen, -klohr-]
noun Chemistry.
a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
Also, paradichlorobenzene.
Also called PDB, para.
Compare dichlorobenzene.

1875–80; para-1 + di-1 + chloro-2 + benzene Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To paradichlorobenzene
American Heritage
Science Dictionary
paradichlorobenzene   (pār'ə-dī-klôr'ə-běn'zēn')  Pronunciation Key 
A white crystalline compound used as a germicide and an insecticide. Chemical formula: C6H4Cl2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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