Any substance, other than food, that is used to prevent, diagnose, treat or relieve symptoms of a disease or abnormal condition. Also refersto a substance that alters mood or body function, or that can be habit-forming or addictive, especially a narcotic.
DRUG
Meaning of DRUG in English
NCI English Dictionary of Cancer Terms. Английский словарь раковых терминов NCI(Национальный институт злокачественных новообразований). 2012