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.
Both tracings showed that the apheliotropic movement was a modified form of circumnutation.
From The Power of Movement in Plants by Charles Darwin
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 Charles Darwin
Of the 54 cauterised radicles one case was doubtful, 25 curved themselves from the light in the normal manner, and 28, or more than half, were not in the least apheliotropic.
From The Power of Movement in Plants by Charles Darwin
The sub-aërial roots observed by Wiesner were all apheliotropic, and this, no doubt, is of use in bringing them into contact with trunks of trees or surfaces of rock, as is their habit.
From The Power of Movement in Plants by Charles Darwin
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 Charles Darwin
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.
