parostosis

from The Century Dictionary.

• noun Same as parosteosis.

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

• noun (Physiol.) Ossification which takes place in purely fibrous tracts; the formation of bone outside of the periosteum.

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

• noun biology ossification which takes place in purely fibrous tracts; the formation of bone outside of the periosteum