Definition of cyclin in English:


Syllabification: cy·clin
Pronunciation: /ˈsīklən


  • Any of a number of proteins associated with the cycle of cell division that are thought to initiate certain processes of mitosis.
    More example sentences
    • Proteasome degradation of cyclins involved in cell cycle regulation has been well documented.
    • Tyrosine kinases associated with cyclins have also been shown to be affected by vitamin K, which can lead to cell cycle arrest and cell death.
    • In general, cyclins are proteins that regulate the cell cycle by combining with cyclin dependent kinases to form an enzymatic complex.


1980s: from cycle + -in1.

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