An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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intra-
  درون-، در-؛ فرو-  
darun- (#), dar- (#); foru- (#)
Fr.: intra-  

Prefix denoting: “inside, within; below.” → intramolecular forces; → intermolecular forces;
→ intramercurian planet.

Etymology (EN): From L. intra “on the inside, within; during; below.” Commonly opposed to → extra-.

Etymology (PE): Darun “in, into; within” (Mid.Pers. andarôn
“inside,” from andar, → inter-, + rôn “side, direction;” Av. ravan- “(course of a) river”).
Dar “in, into; within,” from Mid.Pers. andar, → inter-.
Foru “down, downward; below; beneath” (Mid.Pers. frôt “down, downward;” O.Pers. fravata “forward, downward;” cf. Skt. pravát- “a sloping path, the slope of a mountain”).