noun[mass noun] Chemistry
A crystalline compound that is the main active ingredient of cannabis.
- Chemical formula: C21H30O2.
- The drug's active ingredient, tetrahydrocannabinol, will be delivered not by smoking, but through such mechanisms as a spray aimed under the tongue.
- The product contains the cannabis extract tetrahydrocannabinol and cannabidiol.
- We considered urinary screening for drugs as positive above a concentration of 1000 ng/ml of urine for amphetamines, 300 ng/ml for cocaine and opiates, and 50 ng/ml of acid tetrahydrocannabinol for cannabis.
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