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]