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cytokinin

[sahy-tuh-kahy-nin]
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noun Biochemistry.
  1. 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. 2018

British Dictionary definitions for cytokinin

cytokinin

noun
  1. any of a group of plant hormones that promote cell division and retard ageing in plantsAlso called: kinin
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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

cytokinin in Science

cytokinin

[sī′tə-kīnĭn]
  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.