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Any of several plant hormones, such as gibberellic acid, that stimulate stem elongation, seed germination, and other physiological processes.
[From New Latin Gibberella (fujikoroī), the fungus from which a gibberellin was first isolated, from Latin gibberella, feminine diminutive of gibber, hump (from the humplike shape of the genus's perithecia).]
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.
(Botany) any of several plant hormones, including gibberellic acid, whose main action is to cause elongation of the stem: used in promoting the growth of plants, in the malting of barley, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
gib•ber•el•lin(ˌdʒɪb əˈrɛl ɪn)
any of a class of growth hormones occurring in fungi and plants.
[1935–40; < New Latin Gibberella]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||gibberellin - a plant hormone isolated from a fungus; used in promoting plant growth|
gibberellic acid - a crystalline acid associated with gibberellin
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