Meridian's rhymes with:
davidian's, davidians, didion's, floridians, accordions, arcadians, burgundians, cambodians, canadian's, canadians, canadians', comedian's, comedians, custodians, davidian's, davidians, didion's, floridians, guardian's, guardians, indian's, indians, indians'
Meridian's sounds like:
maertens, maradona's, maradonna's, marathons, marauding, maritimes, martens, martens's, martians, martin's, martinec, martinek, martines, martinez, martinez's, marting, martinique, martinis, martinka, martinko, martins, martins's, mehrtens, meriting, mertens, mertins, mortems, morton's