abscission layer

noun

, Botany.

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

abscission layer

noun

1. 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

Word History and Origins

Origin of abscission layer¹

First recorded in 1915–20