kinesis

ki·ne·sis  (k-nss, k-)

n. pl. ki·ne·ses (-sz)

Movement or activity of an organism in response to a stimulus such as light.

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[Greek knsis, movement, from knein, to move; see kei-² in Indo-European roots.]

Thesaurus

Noun

1.

kinesis - a movement that is a response to a stimulus but is not oriented with respect to the source of stimulation response, reaction - a bodily process occurring due to the effect of some antecedent stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age"