Also known as: ad.
AD has various meanings in the Physiology category. Discover the full forms, definitions, and usage contexts of AD in Physiology.
An uncontrollable craving, seeking, and use of a substance such as alcohol or another drug. Dependence is such an issue with addiction that stopping is very difficult and causes severe physical and mental reactions.
PhysiologyA thing which is added or attached as a supplementary, rather than an essential part of something larger or more important.
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