Ossify

v. t.	1.	(Physiol.) To form into bone; to change from a soft animal substance into bone, as by the deposition of lime salts. [imp. & p. p. Ossified ; p. pr. & vb. n. Ossifying .]
	2.	To harden; as, to ossify the heart.
v. i.	1.	(Physiol.) To become bone; to change from a soft tissue to a hard bony tissue.

Verb	1.	ossify - become bony; "The tissue ossified"
	2.	ossify - make rigid and set into a conventional pattern; "rigidify the training schedule"; "ossified teaching methods"; "slogans petrify our thinking" Synonyms: rigidify, petrify
	3.	ossify - cause to become hard and bony; "The disease ossified the tissue"

anneal, brutalize, calcify, callous, case harden, cornify, firm, fossilize, harden, indurate, inure, lapidify, lithify, petrify, steel, temper, toughen, vitrify