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| calx [ kalks ] (plural calx·es or cal·ces [ kál sz ]) |
noun |
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| Definition: |
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1. metal oxide: the powdery oxide of a metal that is formed when an ore or a mineral is roasted
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2. back of heel: the rounded part at the back of the heel
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| [15th century. < Latin, "lime, limestone" < Greek khalix "pebble"] |
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