The Collaborative International Dictionary
Parostosis
Parostosis \Par`os*to"sis\, n. [NL. See Para-, and Ostosis.] (Physiol.) Ossification which takes place in purely fibrous tracts; the formation of bone outside of the periosteum.
Wiktionary
parostosis
n. (context biology English) ossification which takes place in purely fibrous tracts; the formation of bone outside of the periosteum