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.
| 1880 Darwin Movem. Plants 552 The sub-aërial roots observed by Wiesner were all apheliotropic. 1882 F. Darwin in Nature 27 Apr. 600 The light, causing apheliotropic movement in the leaves. |