ectostosis

ectostosis

[ek-to-stoh-sis, -tuh-]
noun
the ossification of cartilage that begins under the perichondrium and proceeds inward.

Origin:
ect- + ostosis

ectosteal [ek-tos-tee-uhl] , adjective
ectosteally, adverb
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American Heritage
Medical Dictionary

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.

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