decalcify

verbs

lose calcium or calcium compounds
is derived from
is a type of (narrower)
undergo a change; become different in essence; losing one's or its original nature
"She changed completely as she grew older"; "The weather changed last night"
remove calcium or lime from
"decalcify the rock"
antonym
is a type of (narrower)
remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
"remove a threat"; "remove a wrapper"; "Remove the dirty dishes from the table"; "take the gun from your pocket"; "This machine withdraws heat from the environment"