exostosis
noun
ex·os·to·sis ˌek-(ˌ)sä-ˈstō-səs 
plural exostoses ˌek-(ˌ)sä-ˈstō-ˌsēz
: a spur or bony outgrowth from a bone or the root of a tooth
Example Sentences
Recent Examples on the Web The dense growths are known as external auditory exostoses. 
Ashley Strickland, CNN, 14 Aug. 2019 Cold Water Love catching waves? Surfers and other cold water swimmers are prone to something called exostoses, or small bony growths in the ear canal that develop slowly over time and can prevent sound from getting in. Clare Thorp, Cosmopolitan, 2 Aug. 2017 Riley was born with a genetic condition called hereditary multiple exostoses (HME), which causes irregular bone growth. George Diaz, OrlandoSentinel.com, 4 July 2017
Ashley Strickland, CNN, 14 Aug. 2019 Cold Water Love catching waves? Surfers and other cold water swimmers are prone to something called exostoses, or small bony growths in the ear canal that develop slowly over time and can prevent sound from getting in. Clare Thorp, Cosmopolitan, 2 Aug. 2017 Riley was born with a genetic condition called hereditary multiple exostoses (HME), which causes irregular bone growth. George Diaz, OrlandoSentinel.com, 4 July 2017 Word History
Etymology
New Latin, from Greek exostōsis, from ex out of + osteon bone — more at ex-, osseous
First Known Use
1736, in the meaning defined above
Medical Definition
exostosis
noun
ex·os·to·sis ˌek-(ˌ)säs-ˈtō-səs
plural exostoses -ˌsēz
: a spur or bony outgrowth from a bone or the root of a tooth