The Collaborative International Dictionary
Benzene \Ben"zene\, n. [From Benzoin.] (Chem.) A volatile, very inflammable liquid, C6H6, contained in the naphtha produced by the destructive distillation of coal, from which it is separated by fractional distillation. The name is sometimes applied also to the impure commercial product or benzole, and also, but rarely, to a similar mixed product of petroleum.
Benzene nucleus, Benzene ring (Chem.), a closed chain or ring, consisting of six carbon atoms, each with one hydrogen atom attached, regarded as the type from which the aromatic compounds are derived. This ring formula is provisionally accepted as representing the probable constitution of the benzene molecule, C6H6, and as the type on which its derivatives are formed.
Wiktionary
n. (context organic chemistry English) The arrangement of six carbon atoms in a ring, joined by alternating single bond and double bonds that is present in very many organic compounds
WordNet
n. a closed chain of 6 carbon atoms with hydrogen atoms attached [syn: benzene formula, benzene nucleus, Kekule formula]
Usage examples of "benzene ring".
If I did not wish to send a two-dimensional image of that molecule, but chose, rather, to code it into some linear form, a series of successive signals, the place in the benzene ring from which I would begin my description would be unimportant.
The benzene ring (C6H6) brought the huge field of aromatic chemistry into being, and with it a enormous number of industrial applications.
We got together on what a benzene ring was, Peewee drawing it and sticking in her two dollars’.