calcifies

/K AE1 L S AH0 F AY0 Z/
verb
  1. 1

    To make something hard and stony by impregnating with calcium salts.

  2. 2

    To become hard and stony by impregnation with calcium salts.

Source: https://en.wiktionary.org/wiki/calcifies, https://en.wiktionary.org/wiki/calcify