1 gibberellin | Definition of gibberellin
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gibberellin

noun
gibĀ·​berĀ·​elĀ·​lin | \ ĖŒji-bə-Ėˆre-lən How to pronounce gibberellin (audio) \

Definition of gibberellin

: 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

 The seed has two hormones: abscisic acid (ABA), which sends the signal to stay dormant, and gibberellin (GA), which initiates germination. — Jason Daley, Smithsonian, "Seeds May Use Tiny ā€œBrainsā€ to Decide When to Germinate," 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, "Seeds Use Tiny ā€œBrainsā€ to Decide When to Germinate," 9 June 2017

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

First Known Use of gibberellin

1939, in the meaning defined above

History and Etymology for gibberellin

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

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More from Merriam-Webster on gibberellin

Britannica.com: Encyclopedia article about gibberellin

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