acetabulum, ad infinitum, ad libitum, ad nutum, addendum, album, albums, aluminium, ammonium, américium, années-homme, anthonome, antisérum, aquarium, aquariums, arboretum, arum, arums, assomme, assomment, assommes, astronome, astronomes, atrium, auditorium, auditoriums, balatum, barnum, baryum, basilicum, bibendum, bonhomme, bonhommes, bonshommes, bubble gum, bubble-gum, bégum, béryllium, cadmium, caecum, caesium, calcium, caldarium, californium, capharnaüm, caput mortuum, carcinome, cardamome, cardamomes, cardium, cavum, centrum, chewing gum, chewing-gum, chewing-gums, chilom, chlorophytums, colostrum, columbarium, com, comme, compendium, compendiums, condom, condominium, consomme, consomment, consortium, consortiums, continuum, crematorium, critérium, critériums, crématorium, curriculum, custom, cymbalum, césium, delirium, delphinium, delphiniums, deutérium, duodénum, décorum, dégomme, dégomment, dénomment, emporium, entolome, entolomes, erratum, estom, ex-homme, factotum, factotums, factum, factums, fathom, fatum, fermium...