Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO2). Usually, decarboxylation refers to a reaction of carboxylic acids, removing a carbon atom from a carbon chain. The reverse process, which is the first chemical step in photosynthesis, is called carboxylation, the addition of CO2 to a compound. E...
Removal of the carboxyl group. ... (12 Dec 1998) ... 
(de″kahr-bok″sә-la´shәn) removal of the carboxyl group from a compound.
Type: Term Pronunciation: dē′kar-bok′si-lā′shŭn Definitions: 1. A reaction involving the removal of a molecule of carbon dioxide from a carboxylic acid.
This occurs after buds are harvested, during the curing process. The THC loses a CO2 molecule, which then makes the THC psychoactive. This process is why drying and curing buds after harvest is crucial to the high that the bud produces.
[n] - the process of removing a carboxyl group from a chemical compound (usually replacing it with hydrogen)
noun the process of removing a carboxyl group from a chemical compound (usually replacing it with hydrogen)