plant hormone

noun

Definition of plant hormone

: 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 Ethylene is a natural plant hormone that triggers produce to ripen faster. Karla Walsh, Better Homes & Gardens, 15 Sep. 2022 Spuds and apples can give off high levels of ethylene gas (a natural plant hormone), which can trigger spouting. Rita Pelczar, Better Homes & Gardens, 24 Aug. 2022 Tomatoes are sensitive to ethylene, a natural plant hormone that contributes to ripening. Miri Talabac, Baltimore Sun, 28 July 2022 The bacteria can suck nitrogen from the air to provide crucial minerals for the plants, protect the plants against pathogens, make the plants more drought-resistant and increase plant hormone production. Michelle Shen, USA TODAY, 6 Nov. 2021 Solowey soaked the seeds in water and applied commercial plant hormones and fertilizer, but the protocol for planting them was essentially no different than for modern seeds. Sarah Zhang, The Atlantic, 5 Feb. 2020 The other chemicals include vitamins, minerals (including the electrolytes sodium and potassium), and plant hormones like cytokinins (that may benefit the body in various ways). Alexandra Hansen, Quartzy, 5 Nov. 2019 By studying natural variations in root structure and the genetics associated with these variations, the team homed in on a previously unknown biological pathway that regulates auxin, a plant hormone that helps control root growth. San Diego Union-Tribune, 11 July 2019 Among the renitent was Ted Farmer, then a postdoc in the Washington State University lab of renowned plant hormone expert Clarence Ryan. Quanta Magazine, 16 Dec. 2013 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'plant hormone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of plant hormone

1932, in the meaning defined above

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Time Traveler for plant hormone

Time Traveler

The first known use of plant hormone was in 1932

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Dictionary Entries Near plant hormone

plant hopper

plant hormone

plant house

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Statistics for plant hormone

Last Updated

18 Sep 2022

Cite this Entry

“Plant hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plant%20hormone. Accessed 5 Oct. 2022.

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More Definitions for plant hormone

plant hormone

noun
\ ˈplant- How to pronounce plant hormone (audio) \

Medical Definition of plant hormone

: 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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