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May 21, 2012
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ab•scis'ic ac'id



Pronunciation: (ab-sis'ik, -siz'-), [key] Biochem.
a growth-regulating plant hormone, C15H20O4, that promotes dormancy and the aging and abscission of leaves.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

absciseabscissa
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