[ ab-sis-ik, -siz- ]
/ æbˈsɪs ɪk, -ˈsɪz- /
a growth-regulating plant hormone, C15H20O4, that promotes dormancy and the aging and abscission of leaves.
DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!
It’d be a real faux pas to miss this quiz on the words from August 3–9, 2020!
Question 1 of 7
What does “vacillate” mean?
Words nearby abscisic acid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for abscisic acid
[ ăb-sĭz′ĭk ]
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.