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 Day length triggers the trees to lay down an abscission layer, which in turn shuts down the chlorophyll generation. John Meyer, The Know, "Why do leaves change color in the fall?," 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, "Cleveland's West Side could play decisive role in picking the city's next mayor," 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

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Time Traveler for abscission

Time Traveler

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

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Cite this Entry

“Abscission.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/abscission. Accessed 27 Jan. 2021.

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More Definitions for abscission


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

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