abscisic acid

[ ab-sis-ik, -siz- ]
/ æbˈsɪs ɪk, -ˈsɪz- /

noun Biochemistry.

a growth-regulating plant hormone, C15H20O4, that promotes dormancy and the aging and abscission of leaves.

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Origin of abscisic acid

abscis(sion) + -ic, on the model of the earlier name abscisin (see -in2), coined in 1961
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for abscisic acid

abscisic acid
[ ăb-sĭzĭk ]

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: C15H20O4.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.