Heliotropism
[hee-lee-o-truh-piz-uh m, hee-lee-uh-troh-piz-uh m] /ˌhi liˈɒ trəˌpɪz əm, ˌhi li əˈtroʊ pɪz əm/
noun
1.
heliotropic tendency or growth.
/ˌhiːlɪˈɒtrəˌpɪzəm/
noun
1.
the growth of plants or plant parts (esp flowers) in response to the stimulus of sunlight, so that they turn to face the sun
n.
1854, from heliotrope + -ism.
heliotropism
(hē’lē-ŏt’rə-pĭz’əm)
The growth or movement of a fixed organism, especially a plant, toward or away from sunlight. Heliotropism can be easily seen in sunflowers, which slowly turn their large flowers so that they continually face the sun.
heliotropic adjective (hēl’lē-ə-trō’pĭk, -trŏp’ĭk)
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