heliotaxis

[ hee-lee-oh-tak-sis ]

noun

, Biology.

1. movement of an organism toward or away from sunlight.

heliotaxis

/ ˌhiːlɪəʊˈtæksɪs; ˌhiːlɪəʊˈtæktɪk /

noun

1. movement of an entire organism in response to the stimulus of sunlight

Derived Forms

• heliotactic, adjective

Other Words From

• he·li·o·tac·tic [hee-lee-oh-, tak, -tik], adjective

Word History and Origins

Origin of heliotaxis¹

First recorded in 1895–1900; helio- + -taxis