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BNC: 25122 COCA: 23758

tungsten

noun
/ˈtʌŋstən/
/ˈtʌŋstən/
[uncountable]
(symbol W)
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  1. a chemical element. Tungsten is a very hard silver-grey metal, used especially in making steel and in filaments for light bulbs.
    Word Originlate 18th cent.: from Swedish, from tung ‘heavy’ + sten ‘stone’.

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