An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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rational
  ۱) راینی، راینوار؛ ۲) خردانه، خردمندانه؛ ۳) وابری  
1) râyani, râyanvâr; 2) xeradâné, xeradmandâné; 3) vâbari
Fr.: rationnel  
  1. Having or exercising the ability to → reason.
  2. Consistent with or based on reason; logical; in accordance with sound reasoning.
  3. Math.: Capable of being expressed as a quotient of integers.

Etymology (EN): M.E. racional, from O.Fr. racionel, from L. rationalis “of or belonging to reason, reasonable,” from ratio (genitive rationis) “reckoning, calculation, reason,” from rat-, pp. stem of reri “to reckon, calculate; consider, think.”

Etymology (PE): 1) Râyani, of or pertaining to râyan, → reason.
2) Xeradâné, xeradmandâné, of or pertaining to xerad “understanding, judgement, intellect, wisdom;” Mid.Pers. xrad “reason, intellect, intelligence, wisdom, understanding;” O.Pers. xraθu- “wisdom;” Av. xratu- “intelligence, undestanding, wisdom; will, purpose, council;” cf. Skt. krátu- “power, will-power;” Gk. kratos “power, strength.”

3) vâbari, of or pertaining to vâbar, → ratio.