pharmacodynamics: Meaning and Definition of

phar•ma•co•dy•nam•ics

Pronunciation: (fär"mu-kō-dī-nam'iks), [key]
— n. (used with a sing. v.)
  1. the branch of pharmacology dealing with the course of action, effect, and breakdown of drugs within the body.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.