apheliotropism
(əˌfiːlɪˈɒtrəpɪz(ə)m)
[f. apheliotrop-ic + -ism.]
The habit (in plants) of bending away from the light.
| 1880 Darwin Movem. Plants 5 It is much more convenient to confine the word heliotropism to bending towards the light, and to designate as apheliotropism bending from the light. 1880 F. Darwin in Nature No. 582. 179 Hyponasty will of course be opposed by apheliotropism and geotropism. |