heliotropism

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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]

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.

heliotropism

(hē″lē-ŏt′rō-pĭzm) [″ + trepein, to turn, + -ismos, condition]
The tendency of living organisms to turn or grow toward the sun.

heliotropism

a type of PHOTOTROPISM in which the flowers of a plant turn towards the sun during the day.
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References in periodicals archive ?
Although the heliotropic metaphors seem to move round the sun they can only turn round themselves.
But we who are less intimately connected with the school, may also be permitted to congratulate it and ourselves in the hope of being allowed at least as spectators to share in this ascent towards the brighter regions: for the artist and the friend of art meet in the community of the heliotropic, the seekers of light.
Our age has transformed Icarian and heliotropic quests into space exploration.
Two aspects of a southerly wind bring delight to our heliotropic senses--the assured fine spell that accompanies the change, and the translucent quality of air that it produces.