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abscisic acid

Syllabification: ab·scis·ic ac·id
Pronunciation: /abˌsisik ˈasid
 
/

Definition of abscisic acid in English:

noun

Biochemistry
A plant hormone that promotes leaf detachment, induces seed and bud dormancy, and inhibits germination.
Example sentences
  • Of particular interest here is the amphipathic plant hormone abscisic acid.
  • Subsequently, a signal transduction cascade involving at least four plant hormones, ethylene, auxin, abscisic acid, and gibberellic acid, is activated.
  • When conditions are otherwise in favour of producing the submerged type morphology, an exogenous supply of the plant hormone abscisic acid at an optimal concentration induces aerial type characteristics.

Origin

1960s: abscisic from the earlier name for the hormone abscisin, from abscission.

Definition of abscisic acid in:

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