abscisic-acid

abscisic acid

[ab-sis-ik, -siz-]
noun Biochemistry.
a growth-regulating plant hormone, C 15 H 20 O 4 , that promotes dormancy and the aging and abscission of leaves.

Origin:
abscis(sion) + -ic, on the model of the earlier name abscisin (see -in2), coined in 1961

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To abscisic-acid
American Heritage
Science Dictionary
abscisic acid   (āb-sĭz'ĭk)  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature