phototactically


Also found in: Medical, Encyclopedia.

pho·to·tax·is

 (fō′tō-tăk′sĭs)
n.
The movement of an organism or a cell toward or away from a source of light.

pho′to·tac′tic (-tăk′tĭk) adj.
pho′to·tac′ti·cal·ly adv.

phototactically

(ˌfəʊtəʊˈtæktɪklɪ)
adv
(Biology) biology in a phototactic manner