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[sahy-tuh-kahy-nin] /ˌsaɪ təˈkaɪ nɪn/
noun, Biochemistry.
any of a class of plant hormones, produced by the roots and traveling upward through the xylem, that promote tissue growth and budding and, on application, retard plant senescence.
Compare kinetin, zeatin.
Origin of cytokinin
First recorded in 1960-65; cyto- + -kinin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for cytokinin


any of a group of plant hormones that promote cell division and retard ageing in plants Also called kinin
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
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cytokinin in Science
Any of a class of plant hormones that promote cell division and growth and delay the senescence of leaves. Cytokinins are synthesized mainly in root tips.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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