| 单词 | abscission |
| 释义 | abscission[ ab-sizh-uhn, -sish- ] / æbˈsɪʒ ən, -ˈsɪʃ- / SEE SYNONYMS FOR abscission ON THESAURUS.COM nounthe act of cutting off; sudden termination. Botany. the normal separation of flowers, fruit, and leaves from plants. Origin of abscissionFirst recorded in 1605–15, abscission is from the Latin word abscissiōn- (stem of abscissiō). See abscissa, -ion Words nearby abscissionabscess, abscind, abscise, abscisic acid, abscissa, abscission, abscission layer, abscission zone, abscond, abscondee, abscondence Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for abscissionabscission / (æbˈsɪʒən, -ˈsɪʃ-) / nounthe separation of leaves, branches, flowers, and bark from plants by the formation of an abscission layer the act of cutting off Word Origin for abscissionC17: from Latin abscissiōn-, from ab- 1 + scissiō a cleaving Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for abscissionabscission [ ăb-sĭzh′ən ] n.The act of cutting off or away. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for abscissionabscission [ ăb-sĭzh′ən ] 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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