Physical dependence refers to an adaptive physiological state that occurs with regular drug use and results in a withdrawal syndrome when drug use stops.
Other /More definition:
Physical dependence refers to the physical need to continue using drugs, substances, such as alcohol and cigarettes.
Likewise, Physical dependence is the need to continue to take a drug to avoid withdrawal illness.
Physical dependence is also sometimes called Physical addiction.
Lexicon of Psychology - Terms, Treatments, Biographies,