- the act of cutting off; sudden termination.
- Botany. the normal separation of flowers, fruit, and leaves from plants.
- the separation of leaves, branches, flowers, and bark from plants by the formation of an abscission layer
- the act of cutting off
“removal or cutting away,” early 15c., from Latin abscissionem (nominative abscissio) “a cutting off,” noun of action from past participle stem of abscindere (see abscissa).
- The act of cutting off or away.
- The separation of a leaf, flower, or fruit from a plant as a result of natural structural and chemical changes.♦ The abscission zone is a layer of weak, thin-walled cells that form across the base of the plant part where the break eventually occurs. A corky layer containing suberin forms beneath the abscission zone to protect the plant.