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- DictionaryTet·ra·hy·dro·can·nab·i·nol/ˌtetrəˌhīdrōkəˈnabəˌnôl/
noun
- 1. a crystalline compound that is the main active ingredient of cannabis.
noun
Tetrahydrocannabinol (THC) is a terpenoid found in cannabis. It is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Its chemical formula C 21 H 30 O 2 includes compounds, the term THC usually refers to the delta-9-THC isomer with chemical name (−)-trans-Δ 9 -tetrahydrocannabinol. It is a colorless oil. Wikipedia