heliotaxis(redirected from heliotactic)
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The movement of an organism in response to the light of the sun.
he′li·o·tac′tic (-tăk′tĭk) adj.
(Physiology) movement of an entire organism in response to the stimulus of sunlight
he•li•o•tax•is(ˌhi li oʊˈtæk sɪs)
movement of an organism toward or away from sunlight.
he`li•o•tac′tic (-tɪk) adj.
a tendency of certain plants to move in response to sunlight.See also: Plants