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1. (n.) Mohs scale
a scale of hardness for minerals, consisting of the following degrees, in increasing hardness: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; orthoclase 6; quartz 7; topaz 8; corundum 9; diamond 10.
Etymology: (1875–80; after F. Mohs (1773–1839), German mineralogist)
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| Definition of 'mohs scale' |
Princeton's WordNet |
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1. (noun) Mohs scale
a scale of hardness of solids; talc is 0 and diamond is 10; ordering is determined by which substance can scratch another substance
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