Spectrum rhymes with:
ahlstrom, angstrom, backstrom, bertram, blomstrom, borgstrom, bostrom, brostrom, buttrum, bystrom, carlstrom, dahlstrom, eckstrom, edstrom, ekstrom, elfstrom, engstrom, enstrom, fagerstrom, fernstrom, finstrom, forstrom, granstrom, grundstrom, haggstrom, hagstrom, hallstrom, hammerstrom, hedstrom, hegstrom, hellstrom, helstrom, hillstrom, holmstrom, holstrom, kabivitrum, kallstrom, lagerstrom, landstrom, lindstrom, linstrom, lofstrom, lundstrom, maelstrom, malmstrom, malstrom, mostrom, mottram, newstrom, nordstrom, norstrom, nystrom, ostrom, ostrum, quarnstrom, questrom, renstrom, rostrum, sandstrom, seastrom, segerstrom, sjostrom, soderstrom, stenstrom, sundstrom, swanstrom, tantrum, tristram, wahlstrom, walstrom, wennerstrom, wenstrom, westrom, westrum, wickstrom, wikstrom, youngstrom