Main Entry: ex·os·to·sis Pronunciation: "ek-(")säs-'tO-s&s Function: noun Inflected Form: pluralex·os·to·ses/-"sEz/ : a spur or bony outgrowth from a bone or the root of a tooth —ex·os·tot·ic/-'tät-ik/adjective
exostosis ex·os·to·sis (ěk'sŏ-stō'sĭs) n.pl.-ses (-sēz) A projection that is capped by cartilage and arises from a bone that develops from cartilage. Also called hyperostosis, poroma.