Also found in: Medical.
Benzene; benzoic acid: benzophenone.
benzo-or sometimes before a vowel
1. (Elements & Compounds) indicating a benzene ring fused to another ring in a polycyclic compound: benzofuran.
2. (Elements & Compounds) indicating derivation from benzene or benzoic acid or the presence of phenyl groups: benzophenone.
a combining form used in the names of chemical compounds in which benzene, benzoic acid, or one or more of the phenyl groups is present: benzophenone. Also, esp. before a vowel, benz-.