v. t. [ imp. & p. p. Calcified p. pr. & vb. n. Calcifying. ] [ L. calx, calcis, lime + -fy. ] To make stony or calcareous by the deposit or secretion of salts of lime. [ 1913 Webster ]

v. i. To become changed into a stony or calcareous condition, in which lime is a principal ingredient, as in the formation of teeth. [ 1913 Webster ]

v. t. [ imp. & p. p. Decalcified p. pr. & vb. n. Decalcifying. ] To deprive of calcareous matter; thus, to decalcify bones is to remove the stony part, and leave only the gelatin.