noun Pathology.

abnormal development of bony tissue.

Origin of hyperostosis

First recorded in 1825–35; hyper- + ostosis
Related formshy·per·os·tot·ic [hahy-per-o-stot-ik] /ˌhaɪ pər ɒˈstɒt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hyperostosis

Historical Examples of hyperostosis

  • When there is hyperostosis and sclerosis, the shaft appears denser and broader than normal, and the contour is uneven or wavy.

    Manual of Surgery

    Alexis Thomson and Alexander Miles

British Dictionary definitions for hyperostosis


noun plural -ses (-siːz) pathol

an abnormal enlargement of the outer layer of a bone
a bony growth arising from the root of a tooth or from the surface of a bone
Derived Formshyperostotic (ˌhaɪpərɒˈstɒtɪk), adjective
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

Medicine definitions for hyperostosis



n. pl. hy•per•os•to•ses (-sēz)

Excessive or abnormal thickening or growth of bone tissue.
Related formshy′per•os•totic (-ŏ-stŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.