Periodicals rhymes with:
biomedicals, agrochemicals, article's, bicycles, biologicals, biomedicals, chemical's, chemicals, chimicles, chronicle's, chronicles, clinical's, cubicles, cyclicals, electricals, encyclicals, evangelicals, follicles, icicles, musicals, optical's, petrochemicals, pharmaceuticals, physicals, pinnacle's, receptacles, sabbaticals, surgical's, technical's, technicals, testicles, vehicle's, vehicles, vehicles', vesicles
Periodicals sounds like:
particles, portculis, portugal's, pretzels, protocols