nouns
a process that impregnates something with calcium (or calcium salts)
is a type of (narrower)
(chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
tissue hardened by deposition of lime salts
is a type of (narrower)
abnormal hardening or thickening of tissue
an inflexible and unchanging state
"the calcification of negotiations"
is a type of (narrower)
the state of being inactive