heliotropism

[ hee-lee-o-truh-piz-uhm, hee-lee-uh-troh-piz-uhm ]

/ ˌhi liˈɒ trəˌpɪz əm, ˌhi li əˈtroʊ pɪz əm /

noun

heliotropic tendency or growth.

Origin of heliotropism

First recorded in 1850–55; helio- + -tropism

Words nearby heliotropism

heliotaxis, heliotherapy, heliotrope, heliotropic, heliotropin, heliotropism, heliotype, heliozoan, helipad, heliport, heliskiing

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for heliotropism

We notice also the reverse phenomenon, namely, that chemical changes produced in the animal destroy its heliotropism.
Darwin and Modern Science|A.C. Seward and Others
The heliotropism of animals is identical with the heliotropism of plants.
Darwin and Modern Science|A.C. Seward and Others
If it acts in a one-sided way, it causes the particular form of stimulation which we call phototaxis or heliotropism.
The Wonders of Life|Ernst Haeckel
We have mentioned the newly hatched larv of the barnacle in connection with heliotropism.
The Organism as a Whole|Jacques Loeb

Very little attention has been given to the subject of heliotropism until within a few recent years.
Butterflies Worth Knowing|Clarence M. Weed

British Dictionary definitions for heliotropism

heliotropism

/ (ˌhiːlɪˈɒtrəˌpɪzəm) /

noun

the growth of plants or plant parts (esp flowers) in response to the stimulus of sunlight, so that they turn to face the sun

Derived forms of heliotropism

heliotropic (ˌhiːlɪəʊˈtrɒpɪk), adjectiveheliotropically, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for heliotropism

heliotropism

[ hē′lē-ŏt′rə-pĭz′əm ]

The growth or movement of a fixed organism, especially a plant, toward or away from sunlight. Heliotropism can be easily seen in sunflowers, which slowly turn their large flowers so that they continually face the sun.

Other words from heliotropism

heliotropic adjective (hēl′lē-ə-trō′pĭk, -trŏp′ĭk)

单词	heliotropism
释义	heliotropism [ hee-lee-o-truh-piz-uhm, hee-lee-uh-troh-piz-uhm ] / ˌhi liˈɒ trəˌpɪz əm, ˌhi li əˈtroʊ pɪz əm / noun heliotropic tendency or growth. Origin of heliotropism First recorded in 1850–55; helio- + -tropism Words nearby heliotropism heliotaxis, heliotherapy, heliotrope, heliotropic, heliotropin, heliotropism, heliotype, heliozoan, helipad, heliport, heliskiing Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for heliotropism We notice also the reverse phenomenon, namely, that chemical changes produced in the animal destroy its heliotropism. Darwin and Modern Science\|A.C. Seward and Others The heliotropism of animals is identical with the heliotropism of plants. Darwin and Modern Science\|A.C. Seward and Others If it acts in a one-sided way, it causes the particular form of stimulation which we call phototaxis or heliotropism. The Wonders of Life\|Ernst Haeckel We have mentioned the newly hatched larv of the barnacle in connection with heliotropism. The Organism as a Whole\|Jacques Loeb Very little attention has been given to the subject of heliotropism until within a few recent years. Butterflies Worth Knowing\|Clarence M. Weed British Dictionary definitions for heliotropism heliotropism / (ˌhiːlɪˈɒtrəˌpɪzəm) / noun the growth of plants or plant parts (esp flowers) in response to the stimulus of sunlight, so that they turn to face the sun Derived forms of heliotropism heliotropic (ˌhiːlɪəʊˈtrɒpɪk), adjectiveheliotropically, adverb Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for heliotropism heliotropism [ hē′lē-ŏt′rə-pĭz′əm ] The growth or movement of a fixed organism, especially a plant, toward or away from sunlight. Heliotropism can be easily seen in sunflowers, which slowly turn their large flowers so that they continually face the sun. Other words from heliotropism heliotropic adjective (hēl′lē-ə-trō′pĭk, -trŏp′ĭk) The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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