exostosis

[ek-so-stoh-sis, -suh-]

noun, plural ex·os·to·ses

[ek-so-stoh-seez, -suh-] /ˌɛk sɒˈstoʊ siz, -sə-/. Pathology.

the abnormal formation of a bony growth on a bone or tooth.

Origin of exostosis

1730–40; < New Latin < Greek exóstōsis an outgrowth. See ex-³, ostosis

Related formsex·os·tosed, adjectiveex·os·tot·ic

[ek-so-stot-ik, -suh-] /ˌɛk sɒˈstɒt ɪk, -sə-/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for exostosis

Historical Examples of exostosis

This change may consist of induration, exostosis, or even anchylosis.
Special Report on Diseases of Cattle
U.S. Department of Agriculture
It may be of the natural form and size, but the passage through it more or less obstructed by exostosis.
A System of Midwifery
Edward Rigby
Ringbone is the designation of the exostosis which is found on the coronet and in the digital and phalangeal regions.
Special Report on Diseases of the Horse
United States Department of Agriculture
This affection, popularly termed bone spavin, is an exostosis of the hock joint.
Special Report on Diseases of the Horse
United States Department of Agriculture
As a result there is a marked depression at the coronet, the depression being heightened in effect by the exostosis in front.
Diseases of the Horse's Foot
Harry Caulton Reeks

British Dictionary definitions for exostosis

exostosis

noun plural -ses (-siːz)

an abnormal bony outgrowth from the surface of a bone

Word Origin for exostosis

C18: via New Latin from Greek, from ex- 1 + osteon bone

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

exostosis in Medicine

exostosis

[ĕk′sŏ-stō′sĭs]

n. pl. -ses (-sēz)

A projection that is capped by cartilage and arises from a bone that develops from cartilage.hyperostosis poroma