1) Change 2) Remove calcium or lime from 
• (v. t.) To deprive of calcareous matter; thus, to decalcify bones is to remove the stony part, and leave only the gelatin.
To remove lime or calcium salts, especially from bones or teeth. ... (05 Mar 2000) ... 
(de-kal´sĭ-fi) to undergo decalcification.
De·cal'ci·fy transitive verb [ imperfect & past participle Decalcified ; present participle & verbal noun Decalcifying .] To deprive of calcareous matter; thus, to decalcify bones is to remove the stony part, and leave only the ge...
Type: Term Pronunciation: dē-kal′si-fī Definitions: 1. To remove lime or calcium salts, especially from bones or teeth.
[v] - lose calcium or calcium compounds 2. [v] - remove calcium or lime from
verb remove calcium or lime from; `decalcify the rock`