silicon spiegel

noun

: a spiegeleisen containing 15 to 20 percent of manganese and 8 to 15 percent of silicon and used in making certain special steels

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