THESAURUS
petrification
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
ROGET THESAURUS
petrification
Density
N
density, solidity, solidness, impenetrability, impermeability, incompressibility, imporosity, cohesion, constipation, consistence, spissitude, specific gravity, hydrometer, areometer, condensation, caseation, solidation, solidification, consolidation, concretion, coagulation,
petrification, crystallization, precipitation, deposit, precipitate, inspissation, gelation, thickening, indivisibility, indiscerptibility, insolubility, indissolvableness, solid body, mass, block, knot, lump, concretion, concrete, conglomerate, cake, clot, stone, curd, coagulum, bone, gristle, cartilage, casein, crassamentum, legumin, superdense matter, condensed states of matter, dwarf star, neutron star, dense, solid, solidified, caseous, pukka, coherent, cohesive, compact, close, serried, thickset, substantial, massive, lumpish, impenetrable, impermeable, nonporous, imporous, incompressible, constipated, concrete, knotted, knotty, gnarled, crystalline, crystallizable, thick, grumous, stuffy, undissolved, unmelted, unliquefied, unthawed, indivisible, indiscerptible, infrangible, indissolvable, indissoluble, insoluble, infusible.