An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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variable
  ورتنده  
vartandé
Fr.: variable  

Something that may or does vary. → variable star.
Math.: A symbol, usually a letter, which in a mathematical or logic expression represents any member of a set of possible values or possible objects.

Etymology (EN): M.E., from O.Fr. variable, from L. variabilis “changeable,” from variare “to change,” → vary.

Etymology (PE): Vartandé agent noun from vartidan “to change,” → vary.