chemical compound

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry Any substance formed by the union of two or more chemical elements in a fixed ratio, the union being a chemical bond.
• noun informal, proscribed Any single substance, either compound or element

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight