Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities. Also called phytohormone.
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.
Switch to new thesaurus
|Noun||1.||plant hormone - (botany) a plant product that acts like a hormone|
auxin - a plant hormone that promotes root formation and bud growth
gibberellin - a plant hormone isolated from a fungus; used in promoting plant growth
cytokinin, kinin - any of a class of plant hormones that promote cell division and delay the senescence of leaves
plant product - a product made from plant material
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.