(mineralogy) A soft, glassy form of gypsum (chemical formula CaSO₄·2H₂O). / (inorganic chemistry) The anion SeO₃²⁻ derived from selenous acid; any salt or ester of selenous acid.

plural of selenite

(science fiction) An inhabitant of Luna, the moon of Terra.

(science fiction) Pertaining to the inhabitants of Luna (Lunarians/Selenites).

plural of Selenite

(mineralogy) Of or relating to selenite; resembling or containing selenite.

selenitic

(chemistry) A salt, Na₂SeO₃, prepared by a reaction of of selenium dioxide with sodium hydroxide; it is a colorless solid, soluble in water, mainly used in the manufacture of colorless glass.

(inorganic chemistry) Ag₂SeO₃, prepared by a precipitation reaction between silver nitrate and sodium selenite.