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cerous

[seer-uh s]
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adjective Chemistry.
  1. containing trivalent cerium.
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Origin of cerous

First recorded in 1860–65; cer(ium) + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for cerous

cerous

adjective
  1. of or containing cerium in the trivalent state
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Word Origin

C19: from cerium + -ous
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