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Element #34 with the symbol Se. Selenium usually comes as a smooth, black, glossy solid, like a chunk of sexy chocolate. It can also occur as a red powder, which is much more reactive than the black counterpart. Selenium has many applications in today's world, such as being a key ingredient in vitamin supplements and shampoos, solar cells, photoconductors, batteries, fertilizers, and glass production. One property unique to Selenium is that it is quite sensitive to light. This strange characteristic paved the way for the development of solar panels and other devices that utilise light/electricity. Selenium gets its name from the Greek "Selene", which means "moon". The reason for this is because at the time of its discovery, Selenium was placed directly above Tellurium on the periodic table. And Tellurium's name was derived from the Latin "Tellus", which meant "earth". It made perfect sense to name an element after a celestial body with correlation to another similarly-named element.
Selenium is also used in Manganese Electrolysis.
Selenium by CHNOPS July 9, 2020
Related Words
A nonmetallic chemical element with the atomic symbol Se and the atomic number 34. It's essential for human life but is also quite toxic if taken in excess.
Person 1: Did you know that brazil nuts contain more than 777% of thereccomended daily reccomended of selenium?
Person 2: What?! That's crazy!!
selenium by zvcxasdfkwyrio June 17, 2022
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Being ignored by someone when making a statement or asking a question. Also known as blanked and turfed.
Person 1: Did u watch ** last nite?
Person 2:......
Person 3: O no u got aired!
aired by Pietro February 9, 2005
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piddlefart

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Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
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anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
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Word of the Day on October 8, 2026
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