Medical term:
phototactically
phototaxis
[fo″to-tak´sis]taxis of cells and microorganisms under the influence of light. adj., adj phototac´tic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
pho·to·tax·is
(fō'tō-tak'sis),Reaction of living protoplasm to the stimulus of light, involving bodily motion of the whole organism toward (positive phototaxis) or away from (negative phototaxis) the stimulus. Compare: phototropism.
[photo- + G. taxis, orderly arrangement]
Farlex Partner Medical Dictionary © Farlex 2012
phototaxis
(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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
pho·to·tax·is
(fō'tō-tak'sis)Reaction of living protoplasm to the stimulus of light, involving bodily motion of the whole organism toward (positive phototaxis) or away from (negative phototaxis) the stimulus.
Compare: phototropism
Compare: phototropism
[photo- + G. taxis, orderly arrangement]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
phototaxis
the movement of a whole organism in response to a directional light stimulus. For example, movement of unicellular algae or fruit flies towards a source of light is positive phototaxis, while movement away from light if the stimulus is too strong is negative phototaxis.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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