calcification

noun
cal·ci·fi·ca·tion | \ˌkal-sə-fə-ˈkā-shən \

Medical Definition of calcification 

1 : impregnation with calcareous matter: as

a : deposition of calcium salts within the matrix of cartilage often as the preliminary step in the formation of bone — compare ossification sense 1a

b : abnormal deposition of calcium salts within soft tissue often causing thickening or hardening

2 : a calcified structure or part also : an abnormal deposit of calcium salts arterial calcifications

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