apheliotropic
Americanadjective
adjective
Other Word Forms
Etymology
Origin of apheliotropic
First recorded in 1875–80; ap- 2 + heliotropic
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
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 The Power of Movement in Plants by Darwin, Charles
The stems of very young plants of Tropaeolum majus are highly heliotropic, whilst those of older plants, according to Sachs, are slightly apheliotropic.
From The Power of Movement in Plants by Darwin, Charles
It appears, therefore, that light does not determine the growth of apheliotropic parts in any uniform manner.
From The Power of Movement in Plants by Darwin, Charles
This is the case with the radicles of Sinapis alba, which are plainly apheliotropic; nevertheless, they grow quicker in darkness than in light.*
From The Power of Movement in Plants by Darwin, Charles
The radicles of Sinapis alba, when immersed in water and exposed to a lateral light, bend from it, or are apheliotropic.
From The Power of Movement in Plants by Darwin, Charles
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
