APERIODIC Meaning of APERIODIC in English [ape.ri.od.ic] adj (1879) 1: of irregular occurrence "~ floods" 2: not having periodic vibrations: not oscillatory -- ape.ri.od.i.cal.ly adv -- ape.ri.o.dic.i.ty n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012