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vanadous

American  
[van-uh-duhs] / ˈvæn ə dəs /
Also vanadious

adjective

Chemistry.
  1. containing divalent or trivalent vanadium.


vanadous British  
/ ˈvænədəs /

adjective

  1. of or containing vanadium, esp in a divalent or 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 vanadous

First recorded in 1855–60; vanad(ium) + -ous