De·cal·ci·fy 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.
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  decalcify
       v 1: lose calcium or calcium compounds
       2: remove calcium or lime from; "decalcify the rock" [ant: calcify]
       [also: decalcified]