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anhydrous Syllabification: an·hy·drous
Pronunciation: /anˈhīdrəs/

Definition of anhydrous in English:


(Of a substance, especially a crystalline compound) containing no water.
Example sentences
  • The sample was maintained at room temperature for 24 h to ensure conversion of any anhydrous cholesterol crystals to the monohydrate form.
  • The plants produced urea ammonium nitrate and anhydrous ammonia.
  • The water in the mantle may be contained either in high pressure hydrous phases, or alternatively as small hydrous defects in nominally anhydrous minerals.


Early 19th century: from Greek anudros (from an- 'without' + hudōr 'water') + -ous.

Definition of anhydrous in:
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