he·li·ot·ro·pism (h  l- t r -p zm)n. Growth or orientation of a sessile organism, especially a plant, toward or away from the light of the sun. he li·o·tropic (--trpk) adj.he li·o·tropi·cal·ly adv. |
heliotropism [ˌhiːlɪˈɒtrəˌpɪzəm]
n
(Life Sciences & Allied Applications / Botany) the growth of plants or plant parts (esp flowers) in response to the stimulus of sunlight, so that they turn to face the sun
heliotropic [ˌhiːlɪəʊˈtrɒpɪk] adj
heliotropically adv
| heliotropism (hl-tr-pzm) 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 (h ll--tr pk, -trpk) |
heliotropism
the tendency in some plant species to turn or grow toward sunlight. — heliotrope, n. — heliotropic, adj.
See also: Plants
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | heliotropism - an orienting response to the sun tropism - an involuntary orienting response; positive or negative reaction to a stimulus source |
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