Definitions

1. noun

A functional group consisting of a carboxyl group, -COOH, attached to a carbon atom.

“The carboxyl group in amino acids is essential for their biological function.”

2. verb

To add a carboxyl group to a molecule, typically in a chemical reaction.

“The enzyme carboxylase catalyzes the carboxylation of acetyl-CoA to form malonyl-CoA.”