manganese dioxide(redirected from Manganese (IV) oxide)
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A black crystalline compound, MnO2, that is a strong oxidant and is used as a depolarizer of dry-cell batteries and in textile dyeing.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.