orthotropism

[awr-tho-truh-piz-uhm]

noun

1. Botany.,  orthotropic tendency or growth.

Word History and Origins

Origin of orthotropism¹

First recorded in 1880–85; ortho- + -tropism

Example Sentences

Orthotropism, or-thot′rō-pizm, n. vertical growth in plants.—adjs.

From Project Gutenberg