1. (n.) See Petrifaction.

2. (n.) Fig.: Obduracy; callousness.

ancient manuscript antique antiquity archaism arteriosclerosis artifact atherosclerosis calcification callusing case hardening cave painting concretion cornification crystallization eolith firming fossil fossilization granulation hardening hornification induration lapidification lithification mezzolith microlith neolith ossification paleolith petrifaction petrified forest petrified wood petroglyph plateaulith relic reliquiae remains ruin ruins sclerosis setting solidification steeling stiffening survival tempering toughening vestige vitrifaction vitrification