The past tense of Decalcify is decalcified.
verb. remove calcium or lime from.
verb. lose calcium or calcium compounds.
1. Verb, non-3rd person singular present Additionally, bones decalcify due to increased carbon dioxide, which causes deformity in animals. 2. Verb, base form Limescale will cause the water not to pump, so you need to decalcify the machine.