Medical Dictionary
1drug
noun \ˈdrəg\
Medical Definition of DRUG
1
a : a substance used as a medication or in the preparation of medication b according to the Food, Drug, and Cosmetic Act (1) : a substance recognized in an official pharmacopoeia or formulary (2) : a substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease (3) : a substance other than food intended to affect the structure or function of the body (4) : a substance intended for use as a component of a medicine but not a device or a component, part, or accessory of a device
2
: something and often an illicit substance that causes addiction, habituation, or a marked change in consciousness
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