exostosis

American  

[ek-so-stoh-sis, -suh-] / ˌɛk sɒˈstoʊ sɪs, -sə- /

noun

Pathology.

plural

exostoses

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

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exostosis British  

/ ˌɛksɒˈstəʊsɪs /

noun

1. an abnormal bony outgrowth from the surface of a bone

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Other Word Forms

• exostosed adjective
• exostotic adjective

Etymology

Origin of exostosis

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

Example Sentences

Jomon skeletons show a high incidence of what pathologists term auditory exostosis, meaning abnormal bone growth in the ears as often observed in divers today.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

When growing from bones developed in membrane, such as the flat bones of the skull, it is usually dense like ivory, and the term ivory exostosis is employed.

From Manual of Surgery Volume First: General Surgery. Sixth Edition. by Thomson, Alexis

The nearness of the exostosis to the tibiotarsal articulation can be definitely determined by palpation.

From Lameness of the Horse Veterinary Practitioners' Series, No. 1 by Lacroix, John Victor

And finally, a very important feature to be noted, is the location of the exostosis.

From Lameness of the Horse Veterinary Practitioners' Series, No. 1 by Lacroix, John Victor

Displacement, of course, is not possible with an exostosis.

From Lameness of the Horse Veterinary Practitioners' Series, No. 1 by Lacroix, John Victor