diageotropism Bot.
(ˌdaɪədʒiːˈɒtrəpɪz(ə)m)
[f. prec.: see -ism.]
The tendency in parts of plants to grow transversely to the earth's radius.
| 1880 C. & F. Darwin Movem. Pl. 5 Diageotropism, a position more or less transverse to the radius of the earth. |