prodrug A substance which, after metabolic action in the body, is coverted to an active drug. prodrug drug modified by biotransformation (i.e. metabolic processes) to achieve desired pharmacological action proÂ·drug (prÅ'drÅ­g) A class of drugs, the pharmacologic action of which results from conversion by metabolic processes within the body.
verb (used without object), sagged, sagging. 1. to sink or bend downward by weight or pressure, especially in the middle: The roof sags. 2. to hang down unevenly; droop: Her skirt was sagging.
In this particular body type, a large sagging belly with legs and arms being normally proportioned. As in the picture above there are 3 stages of change. Obviously, the sagging belly is in the last stage, but it is certainly not anything to wait to happen to you if you can correct it in an earlier stage.