cal·ci·fi·ca·tion 
(kăl′sə-fĭ-kāshən)
(kăl′sə-fĭ-kāshən)n.
1.
a. Impregnation with calcium or calcium salts, as with calcium carbonate.
b. Hardening, as of tissue, by such impregnation.
2. A calcified substance or part.
3. An inflexible, unchanging state: calcification of negotiations.