apogeotropism
(ˌæpəʊdʒiːˈɒtrəpɪz(ə)m)
[f. as prec. + -ism.]
The tendency of leaves and other parts of plants to turn away from the earth.
| 1880 Darwin Movem. Plants 5 Apogeotropism will mean bending in opposition to gravity or from the centre of the earth. 1881 Academy 12 Feb. 121 The motion produced by apogeotropism is sometimes remarkably straight. |