kinesis

noun Physiology.

1. the movement of an organism in response to a stimulus, as light.

1. a combining form with the general sense “movement, activity,” used in the formation of compound words, often with the particular senses “reaction to a stimulus” (photokinesis), “movement without an apparent physical cause” (telekinesis), “activity within a cell” (karyokinesis).

noun

1. biology the nondirectional movement of an organism or cell in response to a stimulus, the rate of movement being dependent on the strength of the stimulus

n.

“physical movement,” 1819, from Greek kinesis “movement, motion” (see cite).

n. pl. ki•ne•ses (-sēz′)

1. Motion or physical movement, especially movement that is induced by stimulation.