cytokinin

[ sahy-tuh-kahy-nin ]

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.

cytokinin

/ ˌsaɪtəʊˈkaɪnɪn /

noun

1. any of a group of plant hormones that promote cell division and retard ageing in plants Also calledkinin

cytokinin

/ sī′tə-kī′nĭn /

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.

Word History and Origins

Origin of cytokinin¹

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