n. A univalent functional group consisting of a carbonyl and a hydroxyl functional group (-CO.OH); characteristic of carboxylic acids.
the GNU version of the Collaborative International Dictionary of English
n. The complex radical, CO.OH, regarded as the essential and characteristic constituent which all oxygen acids of carbon (as formic, acetic, benzoic acids, etc.) have in common; -- called also oxatyl.
The Century Dictionary and Cyclopedia
n. A hypothetical organic radical having the formula COOH.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. relating to or containing the carboxyl group or carboxyl radical
n. the univalent radical -COOH; present in and characteristic of organic acids
Word Usage
"Many of the compounds in asphalt are polar since they contain alcohol, carboxyl, phenolic, amine, thiol, and other functional groups."