1.Of or pertaining to a cycle or circle; moving in cycles; as, cyclical time.
2.(Chemistry) Having atoms bonded to form a ring structure. Opposite of acyclic. Note: Used most commonly in respect to organic compounds. Note: (Narrower terms: bicyclic; heterocyclic; homocyclic, isocyclic)
3.Recurring in cycles (2); having a pattern that repeats at approximately equal intervals; periodic. Opposite of noncyclic. Note: (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)
4.Marked by repeated cycles (2).