excementosis

noun
ex·​ce·​men·​to·​sis | \ ˌeks-si-ˌmen-ˈtō-səs How to pronounce excementosis (audio) \
plural excementoses\ -​ˈtō-​ˌsēz How to pronounce excementoses (audio) \ or excementosises

Medical Definition of excementosis

: abnormal outgrowth of the cementum of the root of a tooth