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abscisic acid

[ ab-sis-ik, -siz- ]

noun

, Biochemistry.
  1. a growth-regulating plant hormone, C 15 H 20 O 4 , that promotes dormancy and the aging and abscission of leaves.


abscisic acid

/ ăb-sĭzĭk /

  1. A plant hormone that maintains the water balance of plants, prevents seed embryos from germinating, and induces the dormancy of buds and seeds. Chemical formula: C 15 H 20 O 4 .


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Word History and Origins

Origin of abscisic acid1

abscis(sion) + -ic, on the model of the earlier name abscisin ( -in 2 ), coined in 1961

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