- a kind of gypsum found in transparent crystals
- a salt of selenous acid containing the divalent, negative radical SeO
Origin of seleniteClassical Latin selenites from Classical Greek sel?nit?s (lithos), literally , moon (stone) from sel?n?, the moon: once thought to wax and wane with the moon
Gypsum in the form of colorless clear crystals.
Origin of seleniteLatin selēnītēs from Greek selēnītēs (lithos) moon (stone), selenite (so called because it was believed to wax and wane with the moon) from selēnē moon ; see selenium .
(countable and uncountable, plural selenites)