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heliotropic
[ hee-lee-uh-trop-ik, -troh-pik ]
adjective
, Biology.
- turning or growing toward the light.
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Other Words From
- heli·o·tropi·cal·ly adverb
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Word History and Origins
Origin of heliotropic1
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Example Sentences
We must therefore conclude that the heliotropic curvature of the polyps is determined by a photochemical action of the light.
From Project Gutenberg
The eyes of this heliotropic machine consist of two lenses in whose focus is situated the retina consisting of selenium wire.
From Project Gutenberg
In this way the machine follows a lantern in a dark room in a way similar to that of a positively heliotropic animal.
From Project Gutenberg
When the queen founds her nest she loses her wings and becomes negatively heliotropic again.
From Project Gutenberg
Kellogg241 has shown that the nuptial flight of the bees is also a purely heliotropic phenomenon.
From Project Gutenberg
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