zinc dust

noun

: powdery metallic zinc usually containing zinc oxide in varying amounts that collects as a bluish gray powder during distillation of zinc and that is used chiefly as a reducing agent, as a pigment in corrosion-resistant coatings for iron and steel, and in sherardizing

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