plant hormone
Americannoun
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Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities. Auxins, cytokinins, gibberellins, and abscisic acid are examples of plant hormones.
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Also called phytohormone
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Now, Salk scientists have determined how a well-known plant hormone is crucial in controlling the angle at which roots grow.
From Science Daily ● Feb. 14, 2024
Environmental Protection Agency — is typically pumped into sealed storage rooms to inhibit the production of ethylene, a plant hormone.
From Seattle Times ● Dec. 9, 2022
This calcium signaling in the cells causes polar transport of the plant hormone IAA to the bottom of the cell.
From Textbooks ● Jun. 9, 2022
The most commercially successful tomatoes, however, are not the funky, colorful varieties, but the classic round, red, spotless fruits that farmers harvest while the crop is still green and ripen with ethylene, a plant hormone.
From Scientific American ● May 24, 2012
To their unbounded delight, it produced nearly the same phenomena as a plant hormone.
From Time Magazine Archive
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
