{ } a. [ Cf. F. cycluque, Gr. kykliko`s, fr. ky`klos See Cycle. ] 1. Of or pertaining to a cycle or circle; moving in cycles; as, cyclical time. Coleridge. [ 1913 Webster ]

2. (Chemistry) Having atoms bonded to form a ring structure. Opposite of acyclic. Used most commonly in respect to organic compounds. [ Narrower terms: bicyclic; heterocyclic; homocyclic, isocyclic ]
Syn. -- closed-chain, closed-ring. [ WordNet 1.5 ]

3. Recurring in cycles{ 2 }; having a pattern that repeats at approximately equal intervals; periodic. Opposite of noncyclic. [ Narrower terms: alternate(prenominal), alternating(prenominal); alternate(prenominal), every other(prenominal), every second(prenominal); alternating(prenominal), oscillating(prenominal); biyearly; circadian exhibiting 24-hour periodicity); circular; daily, diurnal; fortnightly, biweekly; hourly; midweek, midweekly; seasonal; semestral, semestrial; semiannual, biannual, biyearly; semiweekly, biweekly; weekly; annual, yearly; biennial; bimonthly, bimestrial; half-hourly; half-yearly; monthly; tertian, alternate(prenominal); triennial ] [ WordNet 1.5 ]

4. Marked by repeated cycles{ 2 }. [ WordNet 1.5 ]

Cyclic chorus, the chorus which performed the songs and dances of the dithyrambic odes at Athens, dancing round the altar of Bacchus in a circle. --
Cyclic poets, certain epic poets who followed Homer, and wrote merely on the Trojan war and its heroes; -- so called because keeping within the circle of a single subject. Also, any series or coterie of poets writing on one subject. Milman. [ 1913 Webster ]