Wiktionary
decarboxylate
vb. (context organic chemistry English) To remove one or more carboxyl groups from a molecule
WordNet
decarboxylate
v. lose a carboxyl group; "the compound decarboxylated"
remove a carboxyl group from (a chemical compound)
Usage examples of "decarboxylate".
Actually, THC acid and the other necessary cannabinoid acids are not psychoactive until they decarboxylate (lose an acidic carboxyl group [COOHI).