(biochemistry) Any of a group of proteins whose presence in a cell varies through its cycle, and that regulates this cycle by forming a complex with kinase

plural of cyclin

plural of cycline

(medicine) A derivative of, or mixture of tetracyclines

(pharmacology) Used to form names of generic tetracycline antibiotic drugs.

present participle of cycle

(uncountable) The activity of riding cycles, especially bicycles (for transport, sport, physical exercise, recreation, tourism...)

That undergoes a cyclic motion or process

(cycle racing) A form of cycling on a specially-designed track, especially, a velodrome

plural of cyclinac