arsen-

combining form

variants or arseno-

: arsenic

specifically : containing the grouping −As=As− analogous to the azo group

arsenobenzene

Word History

Etymology

International Scientific Vocabulary, from arsenic

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