selenium

noun

se·​le·​ni·​um sə-ˈlē-nē-əm How to pronounce selenium (audio)
: a photosensitive element that occurs in both crystalline and amorphous forms, is obtained chiefly as a by-product in copper refining, and is used especially in glass, semiconductor devices, and alloys see Chemical Elements Table

Examples of selenium in a Sentence

Recent Examples on the Web The analysis looked for concentrations of arsenic, barium, calcium, cadmium, cobalt, chromium, copper, iron, manganese, mercury, nickel, lead, selenium, strontium, vanadium and zinc. Kate Gibson, CBS News, 5 July 2024 This popular cheese is a rich source of vitamin B12 and also provides smaller amounts of vitamin A and selenium. Jillian Kubala, Health, 1 July 2024 Turkey also offers vitamins like B6 and B12 and minerals like magnesium, niacin and selenium. Bethany Thayer, Detroit Free Press, 22 June 2024 Minerals such as iron, calcium, iodine, magnesium, selenium, copper, molybdenum, and manganese can also lead to serious side effects if consumed in excess. Sarah Anzlovar, Ms, Rd, Verywell Health, 4 June 2024 See all Example Sentences for selenium 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'selenium.' 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

New Latin, from Greek selēnē moon, from selas brightness

First Known Use

1818, in the meaning defined above

Time Traveler
The first known use of selenium was in 1818

Dictionary Entries Near selenium

Cite this Entry

“Selenium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/selenium. Accessed 17 Jul. 2024.

Kids Definition

selenium

noun
se·​le·​ni·​um sə-ˈlē-nē-əm How to pronounce selenium (audio)
: an element that is sensitive to light and is used especially in glass, alloys, and electronic devices see element

Medical Definition

selenium

noun
se·​le·​ni·​um sə-ˈlē-nē-əm How to pronounce selenium (audio)
: a nonmetallic photosensitive element that occurs in both crystalline and amorphous forms, is an essential trace element found especially in grains and meat, and is used chiefly in glass, semiconductor devices, and alloys
symbol Se
see Chemical Elements Table, selenosis

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