IPA: //kɑːrˈbɒksɪl//
KK: /kɑrˈbɑksəl/
A specific group of atoms in organic chemistry that consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group, making it a key component of organic acids.
The carboxyl group is essential in the structure of amino acids.
Carboxyl is formed from "carbo-" (from Latin "carbo", meaning coal or carbon) and "-yl" (a suffix used in chemistry to denote a functional group). The term refers to a functional group containing carbon and oxygen, specifically a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group.
Think of 'carbon' ('carbo-') as the key element in this group, and remember that 'carboxyl' refers to a specific structure involving carbon and oxygen.