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rhe·ni·um
 rhenium
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- pronunciation:
- ri
ni
 m
| part of speech: |
noun |
| definition: |
a chemical element that has seventy-five protons in each nucleus and that occurs naturally only in compounds, but that can be isolated as a very dense metal, used esp. for electrical contacts and other high-temperature applications, and as a catalyst. (symbol: Re)
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