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Dictionary Suite
adamant a legendary stone of great hardness. [1/3 definitions]
adamantine made of, resembling, or having the hardness of adamant. [1/2 definitions]
cobalt a chemical element that has twenty-seven protons in each nucleus and occurs as a brittle silver-white solid metal, used in a variety of alloys to increase hardness. (symbol: Co)
granite exceptional hardness or toughness, as of will or purpose. [1/2 definitions]
metallic resembling metal in hardness, brightness, resonance, bitterness of taste, or other qualities. [1/3 definitions]
mineral any of various inorganic natural substances, usu. having crystalline structures and a characteristic hardness. [1/3 definitions]
Mohs scale a scale that designates the comparative hardness of minerals.
molybdenum a chemical element that has forty-two protons in each nucleus and that occurs as a very hard, dense, silver-white solid metal that is often alloyed with other metals, esp. iron, to increase their hardness. (symbol: Mo)
solidity the state or quality of being solid or firm; firmness, hardness, or substantiality. [1/2 definitions]
steel resembling steel in color, strength, or hardness. [1/7 definitions]
steely resembling steel in color, hardness, or strength. [1/3 definitions]
stony like stone, esp. in hardness. [1/4 definitions]
tellurium a chemical element that has fifty-two protons in each nucleus and that is usu. found in compounds, but that can be isolated as a toxic, brittle, silver-white crystal sometimes used in alloys with lead, copper, or iron to increase hardness and machinability. (symbol: Te)
temper the strength, hardness, or toughness of a metal, esp. steel, that results from tempering, as from heating and then cooling. [1/11 definitions]
tempered of metal or glass, brought to a specified or desirable state, as of strength, hardness, or elasticity. [1/3 definitions]
tungsten steel an alloy of steel and tungsten, having great hardness and high resistance to heat.
vitreous having the nature or characteristics of glass, such as hardness or transparency. [1/3 definitions]
vulcanize to treat (rubber or plastics) with sulfur or sulfur compounds under heat and pressure to increase hardness and elasticity.