Anhydr-
variant of before a vowel.
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- Anhydremia  an abnormal decrease in the volume of the blood, due to loss of water. 
- Anhydride  a compound formed by removing water from a more complex compound: an oxide of a nonmetal (acid anhydride) or a metal (basic anhydride) that forms an acid or a base, respectively, when united with water. a compound from which water has been abstracted. Historical Examples It is the anhydride of an acid, and consequently it […] 
- Anhydrite  a mineral, anhydrous calcium sulfate, CaSO 4 , usually occurring in whitish or slightly colored masses. Historical Examples anhydrite (CaSO4) also occurs in rock masses, and is often associated with rock salt. A Textbook of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer and John Jacob Beringer These observations appear to show […] 
- Anhydro-  a combining form representing anhydride, in compound words: anhydroglucose. anhydro- pref. Without water: anhydride. 
- Anhydrosis  the deficiency or absence of perspiration; adiaphoresis. noun (pathol) the absence of sweating anhidrosis an·hi·dro·sis (ān’hī-drō’sĭs) n. Absence of sweating. Also called adiaphoresis, ischidrosis. 
