geotropism


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ge·ot·ro·pism

 (jē-ŏt′rə-pĭz′əm)
ge′o·tro′pic (jē′ə-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.

geotropism

(ˌdʒiːəʊˈtrəʊpɪzəm)
n
(Botany) the response of a plant part to the stimulus of gravity. Plant stems, which grow upwards irrespective of the position in which they are placed, show negative geotropism
geotropic adj
ˌgeoˈtropically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ge•ot•ro•pism

(dʒiˈɒ trəˌpɪz əm)

n.
oriented movement or growth of an organism with respect to the force of gravity.
[1870–75]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

ge·ot·ro·pism

(jē-ŏt′rə-pĭz′əm)
The growth of an organism in response to gravity. The downward growth of plant roots is an example of geotropism.

geotropic (jē′ə-trō′pĭk, jē′ə-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.

geotropism

Botany. the response of a plant to the force of gravity. — geotropic, adj.
See also: Gravity
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.geotropism - an orienting response to gravity
tropism - an involuntary orienting response; positive or negative reaction to a stimulus source
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

geotropism

[dʒɪˈɒtrəˌpɪzm] ngeotropismo
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
Therefore, when seeds are planted with hilum facing up, the primary root is produced close to the surface and grows around the seed toward the tube bottom, due to geotropism. In other seed positions, this was not observed because the radicle in the seed was facing down or lying on its side, and it favored seedling emergence at these positions.
Auxin elongates subapical cells and affects phototropism, geotropism, and fruit development.
The reason may be more porosity and aeration that enhances roots penetration more deeply in sand media due to geotropism and attains more length.
Growth regulator like [GA.sub.3] and NAA affects flower and fruit setting, cell growth, apical dominance, geotropism and photoperiod.
The "Malaise" portion is efficient in sampling insects with negative geotropism, and the "window" portion is efficient in sampling insects with positive geotropism (Basset, 1988).
Lacri: lacrimination, Sali: salivation, Diah: diarrhoea, Resp: respiratory distress, Leth: lethargy, Con: convulsions, Ste: stereotypy, Tre: tremors, Cat: catalepsy, Geo: effect on positive geotropism, Ret: retropulsion, Stu: stupor, Exe: excitement, x: absence of symptom, [check]: presence of symptom.