• synonyms


[mang-guh-nuh s, man-gan-uh s, mang-]
adjective Chemistry.
  1. containing bivalent manganese.
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Origin of manganous

First recorded in 1815–25; mangan(ese) + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for manganous

Historical Examples

  • Only the manganous and the chromic salts, however, are of importance.

    An Elementary Study of Chemistry

    William McPherson

  • Frequently also, magnesia and manganous oxide are present in small amounts, the former reaching 16%.

  • By neutralising concentrated acetic acid with manganous carbonate, and evaporating the solution so that crystals may form.

  • Formed by adding potassium hydrate to manganous sulphate, and filtering and drying the precipitate in vacuo.

  • By precipitating a solution of manganous sulphate with a solution of sodium phosphate.

British Dictionary definitions for manganous


  1. of or containing manganese in the divalent 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