n pl but sing in constr 1  :  the study of the bodily absorption, distribution, metabolism, and excretion of drugs  2  :  the characteristic interactions of a drug and the body in terms of its absorption, distribution, metabolism, and excretion <evaluated the of a single theophylline dose -Jour. Amer. Med. Assoc.>  phar*ma*co*ki*net*ic adj 
 
   
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2004.