Oma rhymes with:
algoma, aroma, bancoklahoma, bouma, carcinoma, choma, coloma, coma, diploma, douma, glaucoma, goma, homa, leoma, loma, luoma, lymphoma, melanoma, mesothelioma, moma, multnomah, naoma, neoma, nujoma, oklahoma, paloma, papilloma, poma, retinoblastoma, roma, saloma, scoma, shiroma, sloma, soma, sonoma, stroma, sumatoma, tacoma, thoma, toma, troma, xoma
Oma sounds like:
o'hanian, o'mahoney, o'mahony, oana, oanh, oehme, oehmen, oeien, ohanian, ohioan, ohm, ohmae, ohman, ohmann, oien, omaha, omahoney, omahony, oman, omani, omen, ommen, omni, omonia, on, ona, onan, onawa, one, one-way, oney, onion, onnen, onni, onno, ono, oona, owen, own, oyama, oyen