Definition of anhydrous in English:

anhydrous

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

adjective

Chemistry
  • (Of a substance, especially a crystalline compound) containing no water.
    More 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.

Origin

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

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