fossilisation

Noun	1.	fossilisation - the process of fossilizing a plant or animal that existed in some earlier age; the process of being turned to stone Synonyms: fossilization
	2.	fossilisation - becoming inflexible or out of date Synonyms: fossilization

action, activity, fossilise, fossilization, fossilize, natural action, natural process, petrifaction, petrification