beryllium
noun
be·ryl·li·um
bə-ˈri-lē-əm 
: a chemical element of the alkaline earth metal group with atomic number 4 that occurs naturally in minerals such as beryl and is steel-gray in color, light and strong but brittle, and is used chiefly as a hardening agent in alloys see Chemical Elements Table
Examples of beryllium in a Sentence
Recent Examples on the Web
Local employees worked for three divisions: Compensation Analysis and Support, which provided scientific support for claims involving Department of Energy workers with cancer caused by exposure to radiation, beryllium and silica.
—
Patricia Gallagher Newberry, The Enquirer, 2 July 2025
At the Santa Monica test location after the rains, the level of beryllium — a metal that is toxic to fish and corals and causes respiratory distress in humans — was more than 10 times the maximum limit allowed.
—Corinne Purtill, Los Angeles Times, 28 Mar. 2025
According to the Personal Care Products Council, counterfeit cosmetics can come laced with carcinogens like arsenic, beryllium, and cadmium, as well as dangerous levels of aluminum, mercury, and bacteria.
—Boutayna Chokrane, Wired News, 8 July 2025
The team has also procured much of the stainless steel structural material but still faces long lead times on beryllium.
- YouTube www.youtube.com
Slow regulatory guidance is a broader underlying challenge.
—IEEE Spectrum, 30 June 2025
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Patricia Gallagher Newberry, The Enquirer, 2 July 2025
At the Santa Monica test location after the rains, the level of beryllium — a metal that is toxic to fish and corals and causes respiratory distress in humans — was more than 10 times the maximum limit allowed.
—Corinne Purtill, Los Angeles Times, 28 Mar. 2025
According to the Personal Care Products Council, counterfeit cosmetics can come laced with carcinogens like arsenic, beryllium, and cadmium, as well as dangerous levels of aluminum, mercury, and bacteria.
—Boutayna Chokrane, Wired News, 8 July 2025
The team has also procured much of the stainless steel structural material but still faces long lead times on beryllium.
- YouTube www.youtube.com
Slow regulatory guidance is a broader underlying challenge.
—IEEE Spectrum, 30 June 2025
See All Example Sentences for beryllium
Cite this Entry
“Beryllium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beryllium. Accessed 29 Jul. 2025.
Copy CitationKids Definition
beryllium
noun
be·ryl·li·um
bə-ˈril-ē-əm
: a steel-gray light strong brittle toxic metallic element used chiefly to help harden alloys see element
Medical Definition
beryllium
noun
be·ryl·li·um
bə-ˈril-ē-əm
: a steel-gray light strong brittle toxic bivalent metallic element used chiefly as a hardening agent in alloys
—symbol Be
see Chemical Elements Table
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