(ab sizh´ un) [L. abscissio: breaking off] • The process by which leaves, petals, and fruits separate from a plant.

The separation of leaves, branches, flowers and bark from plants following the formation of an abscission layer.

The normal shedding of leaves, flowers or fruit from a plant at a special separation layer

The normal shedding of an organ that is mature or aged, e.g. an old leaf, a ripe fruit. Parent Term: Petiole_(simple_lf) Difficulty Level

shedding of flowers and leaves and fruit following formation of scar tissue in a plant

A natural dropping of leaves, flowers and other plant parts.

natural shedding of dispersal units or other plant parts.

The rejection of plant organs, such as the shedding of leaves during the autumn.

The falling off or breaking off of a leaf or fruit as the result of a weak point which forms at a point on the petiole or stem.

Abscission is the normal separation of a leaf, fruit, or flower from a plant. Abscisic acid is the plant hormone involved in abscission.

The falling of leaf, twig-tip, etc, from a clean-cut scar, by a self-healing wound.

Of plants: The shedding of leaves or other parts as the result of physical weakness in a specialized layer of cells (abscission layer) that develops at the base. ( 21)

the normal shedding from a plant of an organ that is mature or aged, e.g. a ripe fruit, an old leaf. adj. abscissile.

Loss of a plant structure from an abscission zone (for example, when a plant loses a leaf).

Abscission (from ab- away from, and scission cutting or severing) is the shedding of a body part. It most commonly refers to the process by which a plant intentionally drops one or more of its parts, such as a leaf, fruit, flower or seed, though the term is also used to describe the shedding of a claw by an animal.