carboxyl group
noun
1.
the univalent radical COOH, present in and characteristic of organic acids.
Origin
1875-80
British Dictionary definitions for
carboxyl group
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 Origin
C19
carboxyl,
from
carbo-
+
oxy-
² +
-yl