abscission layer

noun Botany.

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

Origin of abscission layer

First recorded in 1915–20

Also called separation layer.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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

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