fermium

noun

fer·​mi·​um ˈfer-mē-əm How to pronounce fermium (audio) ˈfər- How to pronounce fermium (audio)
: a radioactive metallic element produced artificially (as by bombardment of plutonium with neutrons) see Chemical Elements Table

Examples of fermium in a Sentence

Recent Examples on the Web The golden ratio is the metallic mean between 1 and 2, the silver ratio represents the metallic mean between 2 and 3, and so forth, all the way to the fermium ratio (between 100 and 101—I just used the matching chemical element) and beyond. Caroline Delbert, Popular Mechanics, 30 Jan. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fermium.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Enrico Fermi

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of fermium was in 1955

Dictionary Entries Near fermium

Cite this Entry

“Fermium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fermium. Accessed 26 May. 2024.

Kids Definition

fermium

noun
fer·​mi·​um ˈfer-mē-əm How to pronounce fermium (audio) ˈfər- How to pronounce fermium (audio)
: a radioactive metallic element artificially produced (as by bombardment of plutonium with neutrons) see element

Medical Definition

fermium

noun
fer·​mi·​um ˈfer-mē-əm How to pronounce fermium (audio) ˈfər- How to pronounce fermium (audio)
: a radioactive metallic element artificially produced (as by bombardment of plutonium with neutrons)
symbol Fm
see Chemical Elements Table

More from Merriam-Webster on fermium

Love words? Need even more definitions?

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