ce·​rous ˈsir-əs How to pronounce cerous (audio)
: of, relating to, or containing cerium especially with a valence of three

Word History

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of cerous was in 1849

Dictionary Entries Near cerous

Cite this Entry

“Cerous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cerous. Accessed 23 Jul. 2024.

Love words? Need even more definitions?

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