diageotropic

[ dahy-uh-jee-uh-trop-ik, -troh-pik ]

adjective

, Botany.

1. (of a plant part) growing at a right angle to the direction of gravity.

Word History and Origins

Origin of diageotropic¹

First recorded in 1875–80; dia- + geotropic

Example Sentences

The rhizomes of Sparganium ramosum grow out horizontally in the soil to a considerable length, or are diageotropic; but F. Elfving found that when they were cultivated in water their tips turned upwards, and they became apogeotropic.

From Project Gutenberg

It seems therefore highly probable that they place themselves in their diageotropic position by means of modified circumnutation.

From Project Gutenberg

Although it is impossible to modify in any direct manner the attraction of gravity, yet its influence could be moderated indirectly, in the several ways described in the tenth chapter; and under such circumstances the same kind of evidence as that given in the chapter on Heliotropism, showed in the plainest manner that apogeotropic and geotropic, and probably diageotropic movements, are all modified forms of circumnutation.

From Project Gutenberg