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abscission layer

noun, Botany
the layer of specialized, cutinized parenchyma cells that develops in the abscission zone, the disintegration of which causes abscission.
Also called separation layer.
1915-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for abscission layer
  • Northern white cedar will form an abscission layer at the base of small twigs, and will shed entire twigs.
  • Unlike cantaloupes, honeydews do not form an abscission layer between the melon and the stem that permits easy separation from.
British Dictionary definitions for abscission layer

abscission layer

a layer of parenchyma cells that is formed at the bases of fruits, flowers, and leaves before abscission. As the parenchyma disintegrates, the organ becomes separated from the plant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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