blue powder

noun

: a mixture of finely divided and partly oxidized metallic zinc formed by the condensation of zinc vapor into droplets

also : any similar zinc by-product (such as dross, skimmings, or sweepings)

The Ultimate Dictionary 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