-kinesis Also -kinesia, -kinetic, and -kinetics.
[Greek kinēsis, motion; kinētos, movable; both from kinein, to move.]
Terms in -kinesis are nouns indicating movement, as in hyperkinesis (Greek huper, over, beyond), a muscle spasm, or a disorder of children marked in part by hyperactivity; psychokinesis, the supposed ability to move objects by mental effort alone; telekinesis (Greek tēle-, far off), a similar ability to move objects at a distance; kinesis itself means movement or motion.
Nouns in -kinesia are closely related: dyskinesia, abnormality or impairment of voluntary movement; akinesia, loss or impairment of the power of voluntary movement. Sometimes they are alternate forms of terms in -kinesis: hyperkinesia.
Adjectives are formed in -kinetic (see -ic), linked to either of these noun forms: dyskinetic, hyperkinetic, psychokinetic, telekinetic.
Kinetics is the branch of chemistry or biochemistry concerned with measuring and studying the rates of reactions; recently formed examples of compound terms include pharmacokinetics (Greek pharmakon, drug, medicine), studying reaction rates of drugs in the body, and toxicokinetics (Greek toxicon, poison), similarly studying toxic substances.