selenite

[sel-uh-nahyt, si-lee-nahyt]
noun
1.
Mineralogy. a variety of gypsum, found in transparent crystals and foliated masses.
2.
Chemistry. a salt of selenious acid.

Origin:
1560–70; < Latin selēnītēs < Greek selēnī́tēs líthos moonstone; see Selene, -ite1

selenitic [sel-uh-nit-ik] , selenitical, adjective
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World English Dictionary
selenite (ˈsɛlɪˌnaɪt)
 
n
a colourless glassy variety of gypsum
 
[C17: via Latin from Greek selēnitēs lithos moonstone, from selēnē moon; so called because it was believed to wax and wane with the moon]

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Microbial agents are used to naturally respire the selenium compounds selenate and selenite.
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