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abscisic acid

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noun ab·scis·ic acid \ˌab-ˈsi-zik-, -sik-\

Definition of abscisic acid

  1. :  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



Origin of abscisic acid

abscision (variant of abscission) + -ic


First Known Use: 1968


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