Dictionary
pet•ro•chem•i•cal
Pronunciation: (pe"trō-kem'i-kul), [key]—
n.
a chemical substance obtained from petroleum or natural gas, as gasoline, kerosene, or petrolatum.
—
adj.
of or pertaining to petrochemistry or a petrochemical.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.