carboxyl group

noun

1. the univalent radical COOH, present in and characteristic of organic acids.

carboxyl group

/ kɑːˈbɒksaɪl, -sɪl /

noun

1. the monovalent group –COOH, consisting of a carbonyl group bound to a hydroxyl group: the functional group in organic acids

Word History and Origins

Origin of carboxyl group¹

First recorded in 1875–80

Word History and Origins

Origin of carboxyl group¹

C19 carboxyl, from _carbo- + _oxy- ² + _-yl