plant hormone(redirected from Plant growth substance)
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Related to Plant growth substance: phytohormone
Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities. Also called phytohormone.
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|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