diaphototropicadj.
/ˌdʌɪəfəʊtəʊˈtrɒpɪk//ˌdʌɪəfəʊtəʊˈtrəʊpɪk/ Botany.
Of a plant, leaf, etc.: turning at right angles to incident light.
ΚΠ
1901 D. T. MacDougal Pract. Text-bk. Plant Physiol. viii. 138 The leaves of Taraxacum are diaphototropic, apogeotropic, and epinastic.
1929 J. C. Bose Growth & Tropic Movement Plants xiii. 133 The seedling..assumed a diaphototropic position under intense and long-continued action of light.
Derivatives
ˌdiaphoˈtotropism n. [Compare diaheliotropic adj., diaheliotropism n.]
ΚΠ
1901 D. T. MacDougal Pract. Text-bk. Plant Physiol. viii. 127 Leaves..place their surfaces at right angles to the direction of the rays in response to their diaphototropism.
1929 J. C. Bose Growth & Tropic Movement Plants xiii. 133 (title) Dia-phototropism and negative phototropism.
This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2018).
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adj.1901