abscisic acid

noun

ab·scis·ic acid | \ˌab-ˈsi-zik-,

-sik-\

Definition of abscisic acid

: a plant hormone C₁₅H₂₀O₄ that is a sesquiterpene widespread in nature and that typically promotes leaf abscission and dormancy and has an inhibitory effect on cell elongation

Examples of abscisic acid 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 “Brains” to Decide When to Germinate," 9 June 2017

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