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单词 apheliotropic
释义 apheliotropic, a.|əˌfiːlɪəʊˈtrɒpɪk|
[f. Gr. ἀϕ' = ἀπό from + ἥλιος sun + τροπικός belonging to turning: see -tropic.]
Bending or turning away from the sun: said of leaves, and other parts of plants.
1880Darwin Movem. Plants 552 The sub-aërial roots observed by Wiesner were all apheliotropic.1882F. Darwin in Nature 27 Apr. 600 The light, causing apheliotropic movement in the leaves.
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