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plant hormone
noun
: an organic substance other than a nutrient that in minute amounts modifies a plant physiological process
especially
: one produced by a plant and active elsewhere than at the site of production
Examples of plant hormone in a Sentence
Recent Examples on the Web
Health What plants can teach us about human suffering
Plants are very sensitive to touch, with research showing that touching a plant can change its genome and launch a cascade of plant hormones.
—
Big Think, 24 June 2024
Coconut contains a type of anti-inflammatory plant hormone called cytokinins.
—
Nick Blackmer, Verywell Health, 12 Apr. 2024
Other sustainable, lighter shipping cartons are being designed to remove ethylene, a plant hormone that encourages ripening.
Containers from plants.
—
Kim Severson, New York Times, 2 Apr. 2024
Ethylene is a natural plant hormone that triggers produce to ripen faster.
—
Karla Walsh, Better Homes & Gardens, 3 Nov. 2023
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These examples are programmatically compiled from various online sources to illustrate current usage of the word 'plant hormone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1932, in the meaning defined above
Dictionary Entries Near plant hormone
Cite this Entry
“Plant hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plant%20hormone. Accessed 18 Aug. 2024.
Kids Definition
plant hormone
noun
: a substance other than food that in small amounts changes one of the life processes of a plant
especially
: one made by the plant itself and acting somewhere other than at the site where it is produced
Medical Definition
plant hormone
noun
: an organic substance other than a nutrient that in minute amounts modifies a plant physiological process
especially
: one produced by a plant and active elsewhere than at the site of production
called also phytohormone
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