Medical Definition of Hardness scale

1. A qualitative scale in which minerals are classified in order of their increasing hardness, based on the fact that the harder of two materials will scratch the softer and will not be scratched by it. The scale lists 15 substances: 1, talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase, periclase; 7, vitreous pure silica; 8, quartz, stellite; 9, topaz; 10, garnet; 11, tantalum carbide, fused zirconia; 12, fused alumina; 13, silicon carbide; 14, boron carbide; 15, diamond. Synonym: Mohs scale. (05 Mar 2000)

Lexicographical Neighbors of Hardness Scale

Harding
Harding
Harding-Passey melanoma
hardinggrass
hardinggrasses
Harding grass
hardish
hardline
hardliner
hardly
hardly a(a)
hardmouthed
hardness
hardness
hardnesses
hardness scale (current term)
hardnose
hardnoses
hardoke
hardokes
hardpack
hardpacks
hardpan
hardpan
hardpans
hards
hardscrabble
hardset
hardship
hardships

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