phototropism
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pho·tot·ro·pism
(fō-tŏt′rə-pĭz′əm, fō′tō-trō′-)n.
Growth or movement of a sessile organism toward or away from a source of light.
pho′to·tro′pic (fō′tə-trō′pĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
phototropism
(ˌfəʊtəʊˈtrəʊpɪzəm)n
1. (Botany) the growth response of plant parts to the stimulus of light, producing a bending towards the light source
2. (Zoology) the response of animals to light; phototaxis
ˌphotoˈtropic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
pho•tot•ro•pism
(foʊˈtɒ trəˌpɪz əm, ˌfoʊ toʊˈtroʊ pɪz əm)n.
phototropic tendency or growth.
[1895–1900]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
pho·tot·ro·pism
(fō-tŏt′rə-pĭz′əm) The growth or movement of a fixed organism, especially a plant, toward or away from light.
phototropic (fō′tə-trō′pĭk, fō′tə-trŏp′ĭk) adjective
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
phototropism
growth or motion in response to light. — phototropic, adj.
See also: Biologymotion in a particular direction under the stimulus of light, as exhibited by certain plants, organisms, etc. — phototropic, adj.
See also: Motionmotion in a particular direction under the stimulus of light, as manifested by certain plants, organisms, etc. — phototropic, adj.
See also: Lightmotion in response to light, either toward it or away from it, as manifested by certain plants. — phototropic, adj.
See also: Plants-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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Noun | 1. | phototropism - an orienting response to light tropism - an involuntary orienting response; positive or negative reaction to a stimulus source |
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