The Collaborative International Dictionary of English v.0.48:
noncyclic \noncyclic\ adj. 1. not occurring in cycles; not cyclic. Opposite of cyclic. Syn: nonclyclical. [WordNet 1.5] 2. aperiodic. periodic [WordNet 1.5]WordNet (r) 3.0 (2006):
noncyclic adj 1: not cyclic [syn: noncyclic, noncyclical] [ant: cyclic, cyclical] 2: not having repeated cycles