/te'treuh huy'dreuh keuh nab"euh nawl', -nol'/ , n. Pharm.
a compound, C 21 H 30 O 2 , that is the physiologically active component in cannabis preparations (marijuana, hashish, etc.) derived from the Indian hemp plant or produced synthetically. Abbr.: THC
[ 1965-70; TETRA- + HYDRO- 2 + CANNABINOL ]