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bismuthous

American  
[biz-muh-thuhs] / ˈbɪz mə θəs /

adjective

Chemistry.
  1. containing trivalent bismuth.


bismuthous British  
/ ˈbɪzməθəs /

adjective

  1. of or containing bismuth 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 bismuthous

First recorded in 1880–85; bismuth + -ous