As nouns the difference between anhydrite and anhydride
is that anhydrite is a saline evaporite consisting of anhydrous calcium sulfate (gypsum) while anhydride is any compound formally derived from another (or from others) by the loss of a water molecule, especially acid anhydrides.
anhydrite
Noun
(-)
(mineral) A saline evaporite consisting of anhydrous calcium sulfate (gypsum).
anhydride
English
Noun
(
en noun)
(chemistry) any compound formally derived from another (or from others) by the loss of a water molecule, especially acid anhydrides