Here's what rhymes with oxygenarion.
carrion agrarian ovarian barbarian vegetarian veterinarian clarion octogenarian centenarian seminarian libertarian nonagenarian vulgarian authoritarian librarian proletarian sectarian antiquarian trinitarian sanitarian septuagenarian valetudinarian sexagenarian cnidarian utilitarian egalitarian disciplinarian parliamentarian latitudinarian humanitarian totalitarian communitarian nonsectarian Words that almost rhyme with oxygenarion
chameleon barium aquarium honorarium vivarium nobelium sanitarium planetarium ferryman ferrymen lesbian pedestrian thespian vestrymen vestryman equestrian