ˈmethəˌdōn noun
also metha·don -ˌdän
( -s )
Etymology: di methyla mino- + d iphenyl (I) + heptan one
: a narcotic drug C 2 H 5 COC(C 6 H 5 ) 2 CH 2 CH(CH 3 )N(CH 3 ) 2 administered usually in the form of its bitter crystalline hydrochloride for the relief of pain; 6-dimethylamino-4,4-diphenyl-3-heptanone ; also : the hydrochloride or other salt of this compound