- Pharmacodymanics Phar`ma*co*dy*man"ics, n. [Gr. fa`rmakon medicine + E. dynamics.] That branch of pharmacology which treats of the action and the effects of medicines in the body, and also their distribution in various bodily tissues over time, and their breakdown and excretion. [Webster 1913 Suppl. +PJC]
The Collaborative International Dictionary of English. 2000.