abscission definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- a cutting off, as by surgery
- the normal separation of fruit, leaves, etc. from plants by the development of a thin layer of pithy cells at the base of their stems
Origin: Middle English abscisioun ; from Classical Latin abscissio: see abscissa
abscission definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- The act of cutting off.
- Botany The shedding of leaves, flowers, or fruits following the formation of the abscission zone.
abscission - Medical Definition
The American Heritage® Medical Dictionary Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The act of cutting off or away.
abscission - Science Definition
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.