Lanthanum rhymes with:
aluminum, arcanum, duodenum, laudanum, organum, tottenham, tympanum, aluminium, aluminum, annum, arcanum, barnum, bonum, branam, brannam, brannum, branum, bucknam, burnam, burnham, bynum, canam, debnam, denham, denim, denomme, dornam, downum, dunham, dunnam, duodenum, farnam, farnham, farnum, granum, greenham, hannam, hannum, interregnum, jeyaretnam, keenum, lanham, lannom, lanum, laudanum, linam, lynam, magnum, menem, mezhdumarodnom, molybdenum, newnam, obshchestvennom, organum, panem, phenom, platinum, plenum, putnam, puttnam, ranum, sonum, steinem, stoneham, swetnam, tottenham, tranum, tympanum, unum, vanname, vanornum, varnum, venom
Lanthanum sounds like:
lamattina, lamountain, landen, landin, landini, landino, landman, landmine, landon, lantana, lentinan, lentine, lentini, lenton, leontine, leontyne, lewinton, limitation, lindaman, lindane, lindeen, lindeman, lindemann, linden, lindman, lindon, lineitem, linton, london, londono, lundeen, lunden, lundin, lynden, lyndon, lynton