(a.) of or pertaining to a cycle or circle; moving in cycles; as, cyclical time.

alternate annular annulate annulose articulated atomatic atomic atomiferous atomistic beating catenated ceaseless circinate circling circular concatenated connected constant continual continued continuing continuous coronary crownlike cyclic cycloid diatomic dibasic direct discoid disklike endless epochal even ever-recurring every other featureless frequent gapless haunting heteroatomic heterocyclic hexatomic homocyclic immediate incessant interminable intermittent isobaric isochronal isocyclic isoteric isotopic joined jointless linked measured metronomic monatomic monotonous never-ending nonstop oscillatory pentatomic perennial periodic periodical pulsing reappearing reciprocal recurrent recurring repetitive returning revenant rhythmic ring-shaped ringlike rotary round round-the-clock rounded running seamless seasonal serial serried smooth stable steady straight subatomic tetratomic thematic thick-coming triatomic tribasic twenty-four-hour ubiquitous unbroken unceasing undifferentiated undulant undulatory unending uniform unintermitted unintermittent unintermitting uninterrupted unrelieved unremitting unstopped wavelike wheeling