kineticsPronunciation: /kɪˈnɛtɪks, kʌɪ-/Translate kinetics | into French | into Italian Definition of kinetics noun [usually treated as singular] the branch of chemistry or biochemistry concerned with measuring and studying the rates of reactions. [usually treated as plural] the rates of chemical or biochemical reaction. Physicsanother term for dynamics (sense 1).kinetics in other Oxford dictionaries Definition of kinetics in the US English dictionary