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antimonous

American  
[an-tuh-muh-nuhs, -moh-nuhs] / ˈæn tə mə nəs, -ˌmoʊ nəs /
Also antimonious

adjective

Chemistry.
  1. of or containing antimony, especially in the trivalent state.


antimonous British  
/ ˈæntɪmənəs /

adjective

  1. of or containing antimony 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

Etymology

Origin of antimonous

First recorded in 1825–35; antimon(y) + -ous