thc

Pharmacology.

1. tetrahydrocannabinol.

abbreviation for

1. tetrahydrocannabidinol: the active ingredient in cannabis, giving it its narcotic and psychoactive effects

n.active ingredient in marijuana and hashish, 1968, short for tetrahydrocannabinol (1940). n.

1. Tetrahydrocannabinol; a compound that is obtained from cannabis or is made synthetically; it is the primary intoxicant in marijuana and hashish.