Medical term:
heliotropic
he·li·o·tax·is
(hē'lē-ō-tak'sis),A form of phototaxis, and perhaps of thermotaxis, in which there is a tendency to growth or movement toward (positive heliotaxis) or away from (negative heliotaxis) the sun or the sunlight.
Synonym(s): heliotropism
[helio- + G. taxis, orderly arrangement]
Farlex Partner Medical Dictionary © Farlex 2012
heliotropism
(hē′lē-ŏt′rə-pĭz′əm)n.
Growth or orientation of a sessile organism, especially a plant, toward or away from the light of the sun.
he′li·o·tro′pic (-ə-trō′pĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
heliotropism
(hē″lē-ŏt′rō-pĭzm) [″ + trepein, to turn, + -ismos, condition]The tendency of living organisms to turn or grow toward the sun.
Medical Dictionary, © 2009 Farlex and Partners
heliotropism
a type of PHOTOTROPISM in which the flowers of a plant turn towards the sun during the day.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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