1. the act of cutting off; sudden termination.
  2. Botany. the normal separation of flowers, fruit, and leaves from plants.


  1. the separation of leaves, branches, flowers, and bark from plants by the formation of an abscission layer
  2. 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).


  1. The act of cutting off or away.

  1. 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.

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