fossilize Synonyms

fossilise become obdurate firming densify calloused vitrify toughen thicken temper stiffen solidify shrivel fossilate fossilify fossilised become unyielding become rigid become unprogressive cease developing ossifies turned to stone turn into stone become inflexible make hard Turn to Stone rigidify petrify ossify callous calcify calcified cake buttress brace bake antiquate anneal ammonite amalgamate casehardening concrete concreted ossifying ossified mineralize lapidify indurate harden freeze fossilized