os·si·fi·ca·tion 
(ŏs′ə-fĭ-kāshən)
(ŏs′ə-fĭ-kāshən)n.
1. The natural process of bone formation.
2.
a. The hardening or calcification of soft tissue into a bonelike material.
b. A mass or deposit of such material.
3.
a. The process of becoming set in a rigidly conventional pattern, as of behavior, habits, or beliefs.
b. Rigid, unimaginative convention.