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arsenous

[ahr-suh-nuh s] /ˈɑr sə nəs/
adjective, Chemistry
1.
containing arsenic in the trivalent state, as arsenous chloride, AsCl 3 .
2.
of or derived from arsenous acid.
Also, arsenious.
Origin
1790-1800
1790-1800; arsen- + -ous
Can be confused
arsenous, arsonous.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for arsenous

arsenious

/ɑːˈsiːnɪəs/
adjective
1.
of or containing arsenic in the trivalent state
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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