tungsten

1. A rare metallic chemical element (symbol W, from Latin wolframium) with an atomic number of 74. (countable, uncountable) · He then explained that tungsten has the highest melting point, and the highest boiling point, of all known elements.
2. Any of various commercially available alloys principally of tungsten. (countable, uncountable) · There was a bar of tungsten on the bench, and they were invited to feel how heavy it was.
3. A light bulb containing tungsten. (countable, uncountable)

Plural tungstens