Pronunciation: (är'su-nus), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/arsenous.html on line 75 [key]
1. containing arsenic in the trivalent state, as arsenous chloride, AsCl3.
2. of or derived from arsenous acid. Also,arsenious.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.