diaheliotropic, a. Bot.
(daɪəˌhiːlɪəʊˈtrɒpɪk)
[f. Gr. διά across + ἥλιος sun + τροπικός pertaining to turning.]
Growing or moving transversely to the direction of incident light; of or pertaining to diaheliotropism.
| 1880 F. Darwin in Nature No. 582. 179 A diaheliotropic organ has an inherent tendency to place itself at right angles to the direction of the light. 1880 C. & F. Darwin Movem. Pl. 441 Diaheliotropic movements. |