tungsten trioxide

noun

: a compound WO₃ found naturally as tungstite, obtained by chemical treatment as a heavy yellow crystalline powder (as in the extraction of tungsten), and used chiefly in the production of tungsten powder

The Ultimate Dicitonary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now