Medical Dictionary
addiction
noun ad·dic·tion \ə-ˈdik-shən\
Medical Definition of ADDICTION
: compulsive physiological need for and use of a habit-forming substance (as heroin, nicotine, or alcohol) characterized by tolerance and by well-defined physiological symptoms upon withdrawal; broadly : persistent compulsive use of a substance known by the user to be physically, psychologically, or socially harmful—compare habituation
Seen & Heard
What made you want to look up addiction? Please tell us where you read or heard it (including the quote, if possible).