/ Dictionary / Index P pharmacodynamics: Meaning and Definition of Find definitions for: phar•ma•co•dy•nam•ics Pronunciation: (fär"mu-kō-dī-nam'iks), [key] — n. (used with a sing. v.) 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. pharmaco- pharmacogenetics Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language