terbium metal

noun

: any of a group of rare-earth metals separable as a group from other metals occurring with them and in addition to terbium including europium, gadolinium, and sometimes dysprosium compare yttrium metal

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