A nonmetallic chemical element (symbol As) with an atomic number of 33. / (countable) A single atom of this element. / Arsenic trioxide.

(chemistry) Of or containing arsenic with a valence of 5.

Of or pertaining to, or containing, arsenic.

Any drug or other substance containing arsenic.

plural of arsenical

Synonym of arseniasis

plural of arsenic

To combine with arsenic; to treat or impregnate with arsenic.

present participle of arsenicate

Third-person singular simple present indicative form of arsenicate