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 element table
Recent Examples of selenium from the Web
Salmon also is a good source of potassium and selenium and vitamins B12 and D. Both Kimball and Ellis advise getting a variety of fish and seafood in the diet.
I wasn't allowed to poke around too much, but Selenium appeared to be controlled by an iPad wired directly into the PC via USB.
Instead, embrace yolk’s good-for-you nutrients like phosphorus, immune-boosting zinc, B vitamins and selenium, which plays a key role in metabolism.
And selenium from a combination of sources, including oil refineries, sewage treatment plants, agricultural runoff and natural geologic formations, is turning up in Sacramento splittail, white sturgeon, and diving ducks.
Salmon is also high in protein, B vitamins, and minerals like potassium and selenium.
Eating the whole egg also offers you inflammation-fighting antioxidants as well as vitamins D, B12 and minerals selenium, zinc and iron.
At the Packard plant, tests have found arsenic and selenium in the soil nearby.
Like other animals, penguins excrete certain elements (copper, zinc, strontium, selenium) in proportions much higher than what is found in the surrounding environment.
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.
Origin and Etymology of selenium
New Latin, from Greek selēnē moon, from selas brightness
First Known Use: 1818See Words from the same year
SELENIUM Defined for English Language Learners
Definition of selenium for English Language Learners
: a chemical element that is used in electronic devices to make them sensitive to light
SELENIUM Defined for Kids
Definition of selenium for Students
: a gray powdery chemical element used chiefly in electronic devices
Medical Definition of selenium
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