Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class III. Words Relating to MatterSection II. Inorganic Matter
1. Solid Matter
323. Hardness.
INDURATION, petrifaction; lapidification, lapidescence [rare]; cornification, chondrification, vitrification, vitrescence, ossification; crystallization.
[COMPARISONS] stone, pebble, flint, marble, rock, fossil, crag, crystal, quartz, granite, adamant; bone, cartilage; calculus; hardware; heart of oak, block, board, deal board; iron, steel; cast -, decarbonized -, wrought- iron; nail; brick, concrete; cement; osmiridium, iridosmine or iridosmium.
adamantine, adamantean; concrete, stony, rocky, granitic, calculous, lithic, vitrescent, vitrifiable, vitrescible, vitreous; horny, cornified, callous, corneous; bony, ossipid, osseous, ossific; cartilaginous; lapideous, lapidific or lapidifical [rare]; crystallized, crystalloid; hard as a -stone &c. n.; stiff as -buckram, – a poker.