manganese dioxide

noun

: a dark insoluble compound MnO₂ used especially as an oxidizing agent, as a depolarizer of dry cells, and in making glass and ceramics

Examples of manganese dioxide in a Sentence

Recent Examples on the Web

The most important of these minerals is the manganese dioxide pyrolusite. —David Bressan, Forbes, 31 Dec. 2024

What’s more, the nanoscale particles could be made from readily available, inexpensive minerals, such as ferric oxide and gamma manganese dioxide for the anode and cathode materials, respectively. —IEEE Spectrum, 24 Dec. 2023

My intention had been to use manganese dioxide, as the Pech Merle painter did, says Lorblanchet, referring to one of the minerals ground up for paint by the early artists. —Roger Lewin, Discover Magazine, 11 Nov. 2019

The negative terminal, or cathode, is formed by a thin layer of conductive manganese dioxide coating the pellet. —Eric Schlaepfer, IEEE Spectrum, 14 Jan. 2023

When attached at either end to a circuit such as a light bulb, the zinc inside reacts with the manganese dioxide and loses electrons. —Manasee Wagh, Popular Mechanics, 13 May 2022

For example, an alkaline battery, or cell, contains zinc, manganese dioxide, and potassium hydroxide. —Manasee Wagh, Popular Mechanics, 13 May 2022

In the future, the photographer plans to test out more exotic thermites like bismuth trioxide and manganese dioxide. —Wired, 31 Oct. 2019

Word History

First Known Use

1866, in the meaning defined above

Rhymes for manganese dioxide

• aminoglycoside
• chlordiazepoxide
• dimethylformamide
• oligosaccharide
• paraformaldehyde
• polynucleotide
• ribonucleotide
• abide
• allied
• applied
• aside
• astride

Kids Definition

manganese dioxide

noun

: a dark compound of manganese and oxygen that is used especially in making glass and ceramics