wolfram
/ˈwʊlfrəm/
noun
- A hard, gray metal that is used to make steel and light bulb filaments. Also called tungsten.
- The light bulb's filament is made of wolfram because it can glow without melting.
- Wolfram is often used in tools that need to stay sharp at high temperatures.
- Miners in the region used to extract wolfram from the rocks.
Synonyms