Words That Rhyme With "Photoperiod" :
3 syllables:
cereal, cereous, cereus, cerium, cheeriest, choreoid, chorioid, ferial, Geryon, Miriam, myriad, nereid, oread, oreide, period, serial, seriate, serious, Sirius, Syria's, Syrian, Tereus, therian, tyrian, ureide, virial, Zyrian
4 syllables:
Algeria's, Algerian, apterium, arterial, Assyrian, asterion, bacteria's, bacterial, bacterioid, bacterium, biserial, Cerberean, Chaucerian, Cimmerian, cinereous, collyrium, criterion, delirious, delirium, ethereal, eutherian, filariid, funereal, Iberia's, Iberian, Illyrian, Keplerian, Liberia's, Liberian, martyrium, material, mezereum, mysterious, Nigeria's, Nigerian, Pierian, posteriad, psalterium, Siberian, sidereal, Spenserian, subereous, Sumerian, Tiberias, Tiberius, valerian, venereal, whistlerian, zairian
5 syllables:
acroterium, barristerial, cafeterias, cemeterial, deleterious, elaterium, endarterium, ferrocerium, Hanoverian, holothurioid, imagerial, immaterial, magisterial, magisterium, managerial, Megatherium, metatherian, ministerial, monasterial, nonmaterial, osmeterium, phalansterian, presbyterial, Presbyterian, prototherian, semiserious, sericterium, subdelirious, subdelirium, uniserial
6 syllables:
antibacterial, biomaterial, clavicytherium, fusobacterium, ichthyophthirius, intersidereal, microbacterium, mycobacterium
7 syllables:
corynebacterium, cyanobacterium