manganese

noun

man·​ga·​nese ˈmaŋ-gə-ˌnēz How to pronounce manganese (audio)
-ˌnēs
: a grayish-white usually hard and brittle metallic element that resembles iron but is not magnetic and is used especially in alloys, batteries, and plant fertilizers see Chemical Elements Table
manganesian adjective

Examples of manganese in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Critical mineral supplies The European bloc is also set to secure certain supplies of critical raw materials (CRM) from Australia, such as aluminum, lithium and manganese, which are vital for the EU’s overall economic security. Anniek Bao, CNBC, 24 Mar. 2026 Calcium is important for bone strength and nerve signaling, manganese helps support metabolism and antioxidant defenses, copper plays a role in iron metabolism and energy production and selenium is essential for thyroid function and immune health. Daryl Austin, USA Today, 21 Mar. 2026 Of particular interest are polymetallic nodules – agglomerations, typically smaller than a potato, containing manganese and other metals and found in the silt of the deep ocean floor. Coalter G Lathrop, The Conversation, 13 Mar. 2026 Rely on the soil sample analysis to determine the levels of phosphorus, potassium, calcium, magnesium, zinc, manganese, and boron in your soil. Mary Marlowe Leverette, Southern Living, 13 Mar. 2026 See All Example Sentences for manganese

Word History

Etymology

French manganèse, from Italian manganese manganese dioxide

First Known Use

1783, in the meaning defined above

Time Traveler
The first known use of manganese was in 1783

Browse Nearby Words

Cite this Entry

“Manganese.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/manganese. Accessed 6 Apr. 2026.

Kids Definition

manganese

noun
man·​ga·​nese ˈmaŋ-gə-ˌnēz How to pronounce manganese (audio)
-ˌnēs
: a grayish white usually hard and brittle metallic element that resembles iron but is not magnetic see element

Medical Definition

manganese

noun
man·​ga·​nese ˈmaŋ-gə-ˌnēz, -ˌnēs How to pronounce manganese (audio)
: a grayish white usually hard and brittle metallic element that resembles iron but is not magnetic
symbol Mn
see Chemical Elements Table

More from Merriam-Webster on manganese

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster