pharmacokineticsPronunciation: /ˌfɑːməkəʊkɪˈnɛtɪks, -kʌɪ-/Definition of pharmacokinetics noun [treated as singular] the branch of pharmacology concerned with the movement of drugs within the body. Derivatives pharmacokinetic adjective pharmacokinetics in other Oxford dictionaries Definition of pharmacokinetics in the US English dictionary