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 characterizing group (COOH) of certain organic acids.
The univalent radicle, CO2H= O :C (OH), found in nearly all organic acids.
The characteristic acid group, CO.OH, of the organic acids.