abscission

noun
ab·​scis·​sion | \ ab-ˈsi-zhən How to pronounce abscission (audio) \

Definition of abscission

1 : the act or process of cutting off : removal
2 : the natural separation of flowers, fruit, or leaves from plants at a special separation layer

Examples of abscission in a Sentence

Recent Examples on the Web It’s a process called abscission, Tauscher said, where the trees retrench those chemicals and release the leaf. Sarah Bowman, The Indianapolis Star, 5 Oct. 2021 Day length triggers the trees to lay down an abscission layer, which in turn shuts down the chlorophyll generation. John Meyer, The Know, 24 Sep. 2019 Eventually, as the veins in the leaf close down, a layer of cells called the abscission layer forms at the base of the leaf stem before falling off. Andrew J. Tobias, cleveland.com, 3 Nov. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'abscission.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of abscission

15th century, in the meaning defined at sense 1

History and Etymology for abscission

Middle English abscisioun, borrowed from Medieval Latin abscīsiōn-, abscīsiō "cutting off, felling, amputation," going back to Latin, "aposiopesis," from abscīdere "to cut off or away, remove" + -tiōn-, -tiō, suffix of action nouns; spelling abscission (in Late and Medieval Latin as abscissiōn-, abscissiō) by construing the noun as a derivative of Latin abscindere "to tear off or away" — more at abscise, abscissa

Buying Guide

Our Reviews team has selected the best leaf blowers.

Learn More About abscission

Time Traveler for abscission

Time Traveler

The first known use of abscission was in the 15th century

See more words from the same century

Dictionary Entries Near abscission

abscissio infiniti

abscission

abscission layer

See More Nearby Entries 

Statistics for abscission

Cite this Entry

“Abscission.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/abscission. Accessed 25 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for abscission

abscission

noun
ab·​scis·​sion | \ ab-ˈsizh-ən How to pronounce abscission (audio) \

Medical Definition of abscission

: the act or process of cutting off : ablation

More from Merriam-Webster on abscission

Nglish: Translation of abscission for Spanish Speakers

Britannica.com: Encyclopedia article about abscission

WORD OF THE DAY

Test Your Vocabulary

Eponyms: Words Named After People

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!