selenite

3 definitions found

selenite - Collaborative International Dictionary of English v.0.48 :

  Gypsum \Gyp"sum\ (j[i^]p"s[u^]m), n. [L. gypsum, Gr. gy`psos;
     cf. Ar. jibs plaster, mortar, Per. jabs[imac]n lime.] (Min.)
     A mineral consisting of the hydrous sulphate of lime
     (calcium). When calcined, it forms plaster of Paris.
     Selenite is a transparent, crystalline variety;
     alabaster, a fine, white, massive variety.
     [1913 Webster]

  Selenite \Sel"e*nite\, n. (Chem.)
     A salt of selenious acid.
     [1913 Webster]

  Selenite \Sel"e*nite\, n. [L. selenites, Gr. ???? (sc. ???),
     from selh`nh the moon. So called from a fancied resemblance
     in luster or appearance to the moon.] (Min.)
     A variety of gypsum, occuring in transparent crystals or
     crystalline masses.
     [1913 Webster] Selenitic