selenium

noun
se·​le·​ni·​um | \ sə-ˈlē-nē-əm How to pronounce selenium (audio) \

Definition of selenium

: 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

One keto-specific example: Not getting enough selenium, an immune-boosting antioxidant found in plant foods, can cause cardiomyopathy, a hardening of the heart muscle leading to heart failure. Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "9 Keto Diet Dangers Nutritionists Want You to Know About," 2 Jan. 2019 The paper names 12 nutrients key to managing depression and anxiety: folate (vitamin B9), iron, long-chain omega-3 fatty acids, magnesium, potassium, selenium, thiamine (vitamin B1), vitamin A, vitamin B6, vitamin B12, vitamin C and zinc. Kathleen Squires, WSJ, "Feed Your Head: Foods That Target Depression and Anxiety," 26 July 2018 Burning coal creates ash that can contain arsenic, selenium, lead and mercury. Jon Kamp, WSJ, "South Carolina Faces More Flooding as Rivers Continue to Crest," 25 Sep. 2018 Among the more than two dozen ingredients in the kangaroo formula: biotin, choline, inositol, calcium, phosphorus, potassium, sodium, magnesium, zinc, iron, manganese, copper, iodine and selenium. Serena Solomon, New York Times, "Saving Koalas, and Other Marsupials, With Milk Almost as Good as Mom’s," 24 Feb. 2018 As if the asbestos findings aren't scary enough, the lab also found the heavy metals barium, chromium, selenium and lead in Just Shine Shimmer Powder. Marci Robin, Good Housekeeping, "UPDATE: Justice Has Just Announced a Recall of 8 Makeup Products Due to Asbestos Concerns," 1 Feb. 2018 Important nutrients in mushrooms include selenium, vitamin D, glutathione and ergothioneine. Robert Beelman, CNN, "The humble mushroom is the newest superfood," 25 Apr. 2018 Collingwood also cites micronutrient deficiencies in B vitamins, iron, magnesium, selenium and potassium as a potential pitfall of keto eating, along with a chance of ketoacidosis. Katie Parsons, OrlandoSentinel.com, "Ketogenic diet popular for weight loss," 13 June 2018 Lead, arsenic, boron, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, selenium, thallium, and uranium are among the chemicals and heavy metals listed with coal ash deposits. Grace Schneider, The Courier-Journal, "An Indiana county is paying a steep price for burying toxic coal ash," 18 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'selenium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of selenium

1818, in the meaning defined above

History and Etymology for selenium

New Latin, from Greek selēnē moon, from selas brightness

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Statistics for selenium

Last Updated

23 Apr 2019

Look-up Popularity

Time Traveler for selenium

The first known use of selenium was in 1818

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More Definitions for selenium

selenium

noun

English Language Learners Definition of selenium

technical : a chemical element that is used in electronic devices to make them sensitive to light

selenium

noun
se·​le·​ni·​um | \ sə-ˈlē-nē-əm How to pronounce selenium (audio) \

Kids Definition of selenium

: a gray powdery chemical element used chiefly in electronic devices

selenium

noun
se·​le·​ni·​um | \ sə-ˈlē-nē-əm How to pronounce selenium (audio) \

Medical Definition of selenium

: 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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More from Merriam-Webster on selenium

Rhyming Dictionary: Words that rhyme with selenium

Spanish Central: Translation of selenium

Nglish: Translation of selenium for Spanish Speakers

Britannica.com: Encyclopedia article about selenium

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