para-dichlorobenzene
[par-
uh
-dahy-klawr-
uh
-
ben
-zeen, -ben-
zeen
, -klohr-]
/ˌpær ə daɪˌklɔr əˈbɛn zin, -bɛnˈzin, -ˌkloʊr-/
noun
,
Chemistry
1.
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
.
Origin
1875-80;
para-
1
+
di-
1
+
chloro-
2
+
benzene