hyponasty

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hy·po·nas·ty

 (hī′pə-năs′tē)
n.
The upward bending of a leaf or other plant part, resulting from greater growth of the lower side than of the upper side.

hy′po·nas′tic 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.

hyponasty

(ˈhaɪpəˌnæstɪ)
n
(Botany) increased growth of the lower surface of a plant part, resulting in an upward bending of the part. Compare epinasty
ˌhypoˈnastic adj
ˌhypoˈnastically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

hy•po•nas•ty

(ˈhaɪ pəˌnæs ti)

n.
increased growth along the lower surface of a plant or plant part, causing it to bend upward.
[1870–75]
hy`po•nas′tic, adj.
hy`po•nas′ti•cal•ly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

hyponasty

an increase in growth in a lower part of a plant causing it to bend upward. — hyponastic, adj.
See also: Plants
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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References in periodicals archive
For example, excised tobacco leaf tissues grew more rapidly incubated in auxin over a 20 hour period resulting in epinastic (downward) curvature (2, 3) and one-time application of auxins to expanding common bean (Phaseolus vulgaris) leaves produced transient (multi-hour) hyponasty (upward curvature) due to increased abaxial (underside) cell expansion (3).
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