Definition of tungsten
: a gray-white heavy high-melting ductile hard polyvalent metallic element that resembles chromium and molybdenum in many of its properties and is used especially in carbide materials and electrical components (such as lamp filaments) and in hardening alloys (such as steel) — see Chemical Elements Table
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Merriam-Webster unabridged
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Time Traveler for tungsten
The first known use of tungsten was in 1796
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