Calcification /(kăl`sĭ*fĭ*kā"shŭn)/

Cal·ci·fi·ca·tion

Calcification

n.
  1. The process of change into a stony or calcareous substance by the deposition of lime salt; -- normally, as in the formation of bone and of teeth; abnormally, as in calcareous degeneration of tissue. (Physiol.)