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ectostosis

[ek-to-stoh-sis, -tuh-] /ˌɛk tɒˈstoʊ sɪs, -tə-/
noun
1.
the ossification of cartilage that begins under the perichondrium and proceeds inward.
Origin
Related forms
ectosteal
[ek-tos-tee-uh l] /ɛkˈtɒs ti əl/ (Show IPA),
adjective
ectosteally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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ectosteal in Medicine

ectosteal ect·os·te·al (ěk-tŏs'tē-əl)
adj.
Relating to the external surface of a bone.

ectostosis ec·tos·to·sis (ěk'tŏs-tō'sĭs)
n.

  1. Ossification in cartilage beneath the perichondrium.

  2. The formation of bone beneath the periosteum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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