| 释义 |
heliotropism
he·li·ot·ro·pism H0132200 (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 (ˌhiːlɪˈɒtrəˌpɪzəm) or heliotropyn (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, heliotropical adj ˌhelioˈtropically advhe•li•ot•ro•pism (ˌhi liˈɒ trəˌpɪz əm, -əˈtroʊ pɪz-)
n. heliotropic tendency or growth. [1850–55] he·li·ot·ro·pism (hē′lē-ŏt′rə-pĭz′əm) The growth or movement of a fixed organism, especially a plant, toward or away from sunlight.
heliotropic (hēl′lē-ə-trō′pĭk, hēl′lē-ə-trŏp′ĭk) adjectiveheliotropismthe tendency in some plant species to turn or grow toward sunlight. — heliotrope, n. — heliotropic, adj.See also: PlantsThesaurus| Noun | 1. | heliotropism - an orienting response to the suntropism - an involuntary orienting response; positive or negative reaction to a stimulus source |
Translationsheliotropism
heliotropism[‚hē·lē′ä·trə‚piz·əm] (biology) Growth or orientation movement of a sessile organism or part, such as a plant, in response to the stimulus of sunlight. heliotropism
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.heliotropism
Words related to heliotropismnoun an orienting response to the sunRelated Words |