manganese
Americannoun
noun
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A grayish-white, hard, brittle metallic element that occurs in several different minerals and in nodules on the ocean floor. It is used to increase the hardness and strength of steel and other important alloys. Atomic number 25; atomic weight 54.9380; melting point 1,244°C; boiling point 1,962°C; specific gravity 7.21 to 7.44; valence 1, 2, 3, 4, 6, 7.
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See Periodic Table
Etymology
Origin of manganese
1670–80; < French manganèse < Italian manganese, alteration of Medieval Latin magnesia magnesia
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The company is also working on manganese and copper projects at the site.
It has retained its majority shareholding in South African miner Kumba Iron Ore, as well as an interest in a local manganese business and its sprawling wine farm, Vergelegen, outside of Cape Town.
A new study from scientists at Yale University and the University of Missouri shows that catalysts made with manganese can efficiently convert carbon dioxide into formate.
From Science Daily
The team tested this idea by combining a compound made of manganese, cobalt, and germanium with another made of manganese, cobalt, and arsenic.
From Science Daily
Brazil is one of the world’s major sources of the world’s iron ore, and has vast—yet underdeveloped—deposits of rare earths such as manganese, Lifton said.
From Barron's
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
