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cytokinin

[ sahy-tuh-kahy-nin ]
/ ˌsaɪ təˈkaɪ nɪn /
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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.
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Compare kinetin, zeatin.

Origin of cytokinin

First recorded in 1960–65; cyto- + -kinin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for cytokinin

cytokinin
/ (ˌsaɪtəʊˈkaɪnɪn) /

noun
any of a group of plant hormones that promote cell division and retard ageing in plantsAlso 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

Scientific definitions for cytokinin

cytokinin
[ sī′tə-kīnĭn ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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