geotropism
oriented growth with respect to the force of gravity.
Origin of geotropism
1Words Nearby geotropism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use geotropism in a sentence
Thus I am now observing something about geotropism, and I had no idea a few weeks ago that this would have been necessary.
More Letters of Charles Darwin Volume II | Charles DarwinNo phenomenon of tropic movement appears so inexplicable as that of geotropism.
Life Movements in Plants, Volume II, 1919 | Sir Jagadis Chunder BoseThe root is thus supposed to be characterised by "positive" and the shoot by "negative" geotropism.
Life Movements in Plants, Volume II, 1919 | Sir Jagadis Chunder BoseHence an agent which acts on the organ from outside, induces phototropic change earlier than variation in geotropism.
Life Movements in Plants, Volume II, 1919 | Sir Jagadis Chunder BoseFurther tests will be given later, to distinguish the phenomenon of Thermonasty from that of Thermo-geotropism.
Life Movements in Plants, Volume II, 1919 | Sir Jagadis Chunder Bose
British Dictionary definitions for geotropism
/ (dʒɪˈɒtrəˌpɪzəm) /
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
Derived forms of geotropism
- geotropic (ˌdʒiːəʊˈtrɒpɪk), adjective
- geotropically, 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 geotropism
[ jē-ŏt′rə-pĭz′əm ]
The directional growth of an organism in response to gravity. Roots display positive geotropism when they grow downwards, while shoots display negative geotropism when they grow upwards. Also called gravitropism
Other words from geotropism
- geotropic adjective (jē′ə-trō′pĭk, jē′ə-trŏp′ĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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