WordReference Random House Unabridged Dictionary of American English © 2026
arsen-,
WordReference Random House Unabridged Dictionary of American English © 2026- var. of arseno-, esp. before a vowel.
ar•se•no
(är′sə nō′),USA pronunciation adj. [Chem.]
arseno-,
- Chemistrycontaining the arseno group.
- adjective, adjectival use of arseno-
arseno-,
- Chemistrya combining form representing arsenic or arseno group in the formation of compound words:arsenopyrite.
- arsen(ic) + -o-
'arsen-' also found in these entries (note: many are not synonyms or translations):
arsenate
- arsenic
- arsenic acid
- arsenide
- arsenious
- arsenite
- arseno
- arsenous
- nonarsenic
- nonarsenical