• synonyms


[si-lee-nee-uh s]
adjective Chemistry.
  1. containing tetravalent or bivalent selenium.
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Also selenous.

Origin of selenious

First recorded in 1825–35; seleni(um) + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for selenious

Historical Examples

  • Sulphurous acid has no action on selenic acid, but instantly decomposes the selenious acid.

    Quarterly Journal of Science, Literature and the Arts, July-December, 1827


  • When this is dissolved in water it yields a crystalline hydrate of selenious acid (H2SeO3).

  • The salts formed by selenious acid (selenites), with the exception of those of the alkali metals, are mostly insoluble in water.

British Dictionary definitions for selenious


selenous (sɪˈliːnəs)

  1. of or containing selenium in the divalent or tetravalent state
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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