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Tungsten :: Tungsten (n.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18..

Stern :: Stern (superl.) Having a certain hardness or severity of nature, manner, or aspect; hard; severe; rigid; rigorous; austere; fixed; unchanging; unrelenting; hence, serious; resolute; harsh; as, a sternresolve; a stern necessity; a stern heart; a stern gaze; a stern decree..

Petrifaction :: Petrifaction (n.) The process of petrifying, or changing into stone; conversion of any organic matter (animal or vegetable) into stone, or a substance of stony hardness..

Tempering :: Tempering (n.) The process of giving the requisite degree of hardness or softness to a substance, as iron and steel; especially, the process of giving to steel the degree of hardness required for various purposes, consisting usually in first plunging the article, when heated to redness, in cold water or other liquid, to give an excess of hardness, and then reheating it gradually until the hardness is reduced or drawn down to the degree required, as indicated by the color produced on a polished p

Durity :: Durity (n.) Hardness; firmness.

Phosphor-bronze :: Phosphor-bronze (n.) A variety of bronze possessing great hardness, elasticity, and toughness, obtained by melting copper with tin phosphide. It contains one or two per cent of phosphorus and from five to fifteen per cent of tin..

Irony :: Irony (a.) Resembling iron taste, hardness, or other physical property..

Scleroderma :: Scleroderma (n.) A disease of adults, characterized by a diffuse rigidity and hardness of the skin..

Linoleum :: Linoleum (n.) Linseed oil brought to various degrees of hardness by some oxidizing process, as by exposure to heated air, or by treatment with chloride of sulphur. In this condition it is used for many of the purposes to which India rubber has been applied..

Impenitence :: Impenitence (n.) The condition of being impenitent; failure or refusal to repent; hardness of heart.

Temper :: Temper (n.) The state of a metal or other substance, especially as to its hardness, produced by some process of heating or cooling; as, the temper of iron or steel..

Brassy :: Brassy (a.) Of or pertaining to brass; having the nature, appearance, or hardness, of brass..

Flintiness :: Flintiness (n.) The state or quality of being flinty; hardness; cruelty.

Opal :: Opal (n.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity..

Rigor :: Rigor (n.) The becoming stiff or rigid; the state of being rigid; rigidity; stiffness; hardness.

Obfirmation :: Obfirmation (n.) Hardness of heart; obduracy.

Garnet :: Garnet (n.) A mineral having many varieties differing in color and in their constituents, but with the same crystallization (isometric), and conforming to the same general chemical formula. The commonest color is red, the luster is vitreous, and the hardness greater than that of quartz. The dodecahedron and trapezohedron are the common forms..

Obduracy :: Obduracy (n.) The duality or state of being obdurate; invincible hardness of heart; obstinacy.

Durometer :: Durometer (n.) An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like..

Obduredness :: Obduredness (n.) Hardness.

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