from The American Heritage® Dictionary of the English Language, 5th Edition.
- intransitive verb To cut off; remove.
- intransitive verb To shed by abscission.
from The Century Dictionary.
- To cut off or away.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- verb shed flowers and leaves and fruit following formation of a scar tissue
- verb remove or separate by abscission
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
And once the hormone level reaches to a certain point, that induces the organ shed, basically, the leaves or the fruits or flower petals or whatever it is that can abscise from their tree or plant.