apheliotropic

American  

[a-fee-lee-uh-trop-ik, -troh-pik, ap-hee-] / æˌfi li əˈtrɒp ɪk, -ˈtroʊ pɪk, æpˌhi- /

adjective

Botany.

1. turning or growing away from the sun.

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apheliotropic British  

/ əˌfiː-, æpˌhiːlɪˈɒtrəˌpɪzəm, əˌfiː-, æpˌhiːlɪəˈtrɒpɪk /

adjective

1. biology growing in a direction away from the sunlight

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Other Word Forms

• apheliotropically adverb
• apheliotropism noun

Etymology

Origin of apheliotropic

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

Example Sentences

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

From Project Gutenberg

They were thus placed because De Vries says* that they are apheliotropic when exposed to the light of the sun; but we could not perceive any effect from the above feeble degree of illumination.

From Project Gutenberg

Any kind of movement in relation to light will obviously be much facilitated by each part circumnutating or bending successively in all directions, so that an already existing movement has only to be increased in some one direction, and to be lessened or stopped in the other directions, in order that it should become heliotropic, apheliotropic, etc., as the case may be.

From Project Gutenberg

Sachs states that the older internodes of this Tropaeolum are apheliotropic; we therefore placed a plant, 11 3/4 inches high, in a box, blackened within, but open on one side in front of a north-east window without any blind.

From Project Gutenberg

Bignonia capreolata: apheliotropic movement of a tendril, traced on a horizontal glass from 6.45 A.M.

From Project Gutenberg