Min. [mod. f. Gr. ἄνῡδρ-ος waterless + -ITE min. form.; so named by Werner.] Anhydrous gypsum, or sulphate of lime.
1831. Brewster, Optics, xxx. 252. Augite, Annydrite, Axinite.
1842. T. Graham, Elem. Chem., II. v. 497. Sulphate of lime occurs in a crystalline form, without water, forming the mineral anhydrite.
1875. Ure, Dict. Arts, I. 177. Anhydrite is frequently found in beds of rock-salt, where it is often associated with gypsum or hydrous sulphate of lime.
