Definitions

from The Century Dictionary.

  • noun That form of ossification of cartilage which begins in or immediately under the perichondrium; also, growth of bone from without inward; periosteal ossification.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Physiol.) A process of bone formation in which ossification takes place in the perichondrium and either surrounds or gradually replaces the cartilage.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physiology A process of bone formation in which ossification takes place in the perichondrium and either surrounds or gradually replaces the cartilage.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

ecto- +‎ ostosis

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