|
(jp"sm), n.[L. gypsum, Gr. gy°psos; cf. Ar. jibs plaster, mortar, Per. jabsn lime.] (Min.) A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, stype forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety. スポンサード リンク
|