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abscission layer

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noun Botany.

the layer of specialized, cutinized parenchyma cells that develops in the abscission zone, the disintegration of which causes abscission.

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Also called separation layer.

Origin of abscission layer

First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for abscission layer

abscission layer

noun

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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