An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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vapor
  بخار  
boxâr (#)
Fr.: vapeur  

The gaseous form of substances that are normally in liquid or solid form.

Etymology (EN): M.E. vapour, L. vapor “exhalation, steam, heat,” of unknown origin.

Etymology (PE): Boxâr, loan from Ar. buxâr.