Dictionary

selenite

noun sel·e·nite \ˈse-lə-ˌnīt\

Definition of SELENITE

:  a variety of gypsum occurring in transparent crystals or crystalline masses
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Origin of SELENITE

Middle English selinete, from Latin selenites, from Greek selēnitēs (lithos), literally, stone of the moon, from selēnē; from the belief that it waxed and waned with the moon
First Known Use: 15th century

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