Abscisic Acid Definition
ăb-sĭzĭk
noun
A plant hormone, C15 H20 O4 , involved in the abscission of leaves, flowers, and fruits and the dormancy of buds and seeds.
American Heritage
An organic acid, C15H20O4, which acts as a growth regulator causing dormancy and abscission of leaves and fruit.
Webster's New World
A plant hormone, C15 H20 O4 , that regulates the abscission of leaves, flowers, and fruits, the dormancy of buds and seeds, and other developmental processes and stress responses.
American Heritage Medicine
(biochemistry) A terpenoid best known as a plant hormone that inhibits seed germination and was once thought to be important in abscission.
Wiktionary
Origin of Abscisic Acid
-
abscision + -ic
From Wiktionary
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