gibberellin

noun

gib·​ber·​el·​lin ˌji-bə-ˈre-lən How to pronounce gibberellin (audio)
: any of several growth-regulating plant hormones that promote cell elongation and activity of the cambium, induce parthenocarpy, and stimulate synthesis of nucleic acids and proteins

Examples of gibberellin in a Sentence

Recent Examples on the Web Powdered Kelp Meal: Another all-natural powerhouse, this powder increases natural plant growth hormones such as auxins, cytokines, and gibberellins (aka: powerful plant hormones). Kristin Guy, Sunset Magazine, 28 Feb. 2023 The seed has two hormones: abscisic acid (ABA), which sends the signal to stay dormant, and gibberellin (GA), which initiates germination. Jason Daley, Smithsonian, 9 June 2017 The seed has two hormones: abscisic acid (ABA), which sends the signal to stay dormant, and gibberellin (GA), which initiates germination. Jason Daley, Smithsonian, 9 June 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'gibberellin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin Gibberella fujikoroi, fungus from which it was first isolated

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of gibberellin was in 1939

Dictionary Entries Near gibberellin

Cite this Entry

“Gibberellin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gibberellin. Accessed 21 Feb. 2024.

Kids Definition

gibberellin

noun
gib·​ber·​el·​lin ˌjib-ə-ˈrel-ən How to pronounce gibberellin (audio)
: any of several chemical substances that regulate the growth of plants

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