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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. |
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