or par·a·di·chlo·ro·ben·zene

[ par-uh-dahy-klawr-uh-ben-zeen, -ben-zeen, -klohr- ]
/ ˌpær ə daɪˌklɔr əˈbɛn zin, -bɛnˈzin, -ˌkloʊr- /

noun Chemistry.

a white, crystalline, volatile, water-insoluble solid, C6H4Cl2, of the benzene series, having a penetrating odor: used chiefly as a moth repellent.

Origin of para-dichlorobenzene

First recorded in 1875–80; para-1 + di-1 + chloro-2 + benzene
Also called PDB, para. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for paradichlorobenzene

[ păr′ə-dī-klôr′ə-bĕnzēn′ ]

A white crystalline compound used as a germicide and an insecticide. Chemical formula: C6H4Cl2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.