calcification

noun

cal·​ci·​fi·​ca·​tion ˌkal-sə-fə-ˈkā-shən 

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