Definition of "manganous" [man•ga•nous]

• Relating to bivalent manganese or to a compound containing bivalent manganese. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The details of the method are as follows: A solution of manganous sulphate slightly stronger than No. 1 is prepared."
• "Finally, the excess of manganous sulphate is determined, in the manner described by Volhard, by means of solution No. 3."
• "The advantage of this method lies in the fact that it is not necessary to dissolve the oxide which is precipitated upon the glass within the tubes, E, E, since, in the presence of an excess of permanganate, the reduction by nitric oxide extends only to the formation of MnO_ {2}; also in the fact that the solution of manganous sulphate is more stable than that of oxalic acid."