Serum rhymes with:
byram, byrum, theorem, abudrahm, ahlstrom, angstrom, ankrom, ankrum, arum, aurum, avram, backstrom, bertram, blomstrom, bochram, borgstrom, borum, bostrom, brostrom, buttrum, byram, byrom, byrum, bystrom, carlstrom, cockrum, conundrum, corum, dahlstrom, decorum, doldrum, durum, eckstrom, edstrom, ekstrom, elfstrom, engstrom, enstrom, ephraim, eprom, erzurum, fagerstrom, fernstrom, finstrom, forstrom, forum, fulcrum, gerome, geserum, gorham, gorum, granstrom, grundstrom, gundrum, haggstrom, hagstrom, hallstrom, hammerstrom, harem, hedstrom, hegstrom, hellstrom, helstrom, hillstrom, hiram, holmstrom, holstrom, ingram, ingrum, kabivitrum, kallstrom, karam, lagerstrom, landrum, landstrom, lerum, lindstrom, linstrom, lofstrom, lucodendrum, lundstrom, maelstrom, malmstrom, malstrom, mangrum, marcrum, meldrum, mostrom, mottram, muharram, newstrom, nordstrom, norstrom, nystrom, oram, orum, ostrom, ostrum, pilgram, pilgrim, purim, quarnstrom, questrom, quiram, quorum, renstrom, rostrum, sandstrom, santorum, sarum, seagram, seastrom, segerstrom, shoreham, sjostrom, soderstrom, sorum, spectrum, stenstrom, sundstrom, swanstrom, tantrum, tarom, theorem, tristram, tungsrom, uram, wahlstrom, waldrum, walstrom, wennerstrom, wenstrom, westrom, westrum, wickstrom, wikstrom, wolfrom, wolfrum, woodrome, woodrum, yoram, youngstrom
Serum sounds like:
saarinen, saccharin, saccharine, saharan, saran, sarene, sarin, sarine, sarna, sarney, sarni, sarno, sarum, sauerwein, scarano, scherman, scheuerman, scheuermann, schieren, schirm, schorn, schram, schramm, schrom, schrum, schuerman, schuermann, schurman, schwarm, schwerin, sciaroni, sciarrino, scorn, scrawny, scream, screen, seagram, seagren, sehorn, serena, serene, sereno, serino, sermon, serna, serono, serrano, sharm, sharma, sharman, sharon, sharron, sharum, shearin, shearman, shearn, shearon, sheeran, sheerin, shehorn, sherin, sherman, sherrin, sherron, sherwin, shireman, shirin, shiroma, shirone, shoehorn, shogren, shoreham, shorin, shorn, showroom, shrine, shrum, sigourney, siren, sirena, sirhan, sirianni, sirman, sirmon, sirna, siron, sirrine, sjogren, skowron, sojourn, soranno, soriano, sorin, sorum, squirm, sram, sriram, sugarman, sugerman, sukarno, suren, suriano, surinam, suriname, surma, surman, surname, swarm, sworn, syrian, syron