cytokinin

American

[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.

cytokinin British

/ ˌsaɪtəʊˈkaɪnɪn /

noun

Also called: kinin. any of a group of plant hormones that promote cell division and retard ageing in plants

"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 Scientific

/ sī′tə-kī′nĭn /

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.

Etymology

Origin of cytokinin

First recorded in 1960–65; cyto- + -kinin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Unlike other cytokinin-related genes that strongly influence plant growth, increasing FveIPT2 activity caused only minor changes in overall cytokinin levels.

From Science Daily • May 5, 2026

FveIPT2 is involved in tRNA modification and is linked to the production of cis-zeatin, a type of cytokinin.

From Science Daily • May 5, 2026

Plant hormones like auxin and cytokinin have been connected to the angle of root growth in the past, but the mechanisms of that connection have remained poorly understood.

From Science Daily • Feb. 14, 2024

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023