apheliotropic

[ a-fee-lee-uh-trop-ik, -troh-pik, ap-hee- ]

adjective

, Botany.

1. turning or growing away from the sun.

apheliotropic

/ əˌfiː-; æpˌhiːlɪˈɒtrəˌpɪzəm, əˌfiː-; æpˌhiːlɪəˈtrɒpɪk /

adjective

1. biology growing in a direction away from the sunlight

Derived Forms

• apheliotropism, noun

Other Words From

• a·pheli·o·tropi·cal·ly adverb

Word History and Origins

Origin of apheliotropic¹

First recorded in 1875–80; ap- ² + heliotropic

Word History and Origins

Origin of apheliotropic¹

C19: see apo- , heliotropic

Example Sentences

Apheliotropic, a-fē-li-o-trop′ik, adj. turning away from the sun.

From Project Gutenberg

Both tracings showed that the apheliotropic movement was a modified form of circumnutation.

From Project Gutenberg

In September, 39 cauterised radicles were exposed to a northern light, being kept at a proper temperature; and now 23 continued to be apheliotropic in the normal manner, and only 16 failed to bend from the light.

From Project Gutenberg

It appears, therefore, that light does not determine the growth of apheliotropic parts in any uniform manner.

From Project Gutenberg

Some tendrils which consist of modified leaves—organs in all ordinary cases strongly diaheliotropic—have been rendered apheliotropic, and their tips crawl into any dark crevice.

From Project Gutenberg