An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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age
  ۱) سن؛ ۲) عصر  
1) senn (#); 2) asr (#)
Fr.: âge  
  1. The length of time that a celestial body or an evolutionary stage of it has existed, i.e. the age of a massive star, the age of a galaxy, a stellar cluster, and so on.
  2. a: A period of time in the history of the Universe marked by a distinctive characteristic. → cosmic dark age. b: A division of geologic time in the history of the Earth, usually shorter than an epoch.

Etymology (EN): From O.Fr. aage, from Vulgar L. *ætaticum, from L. ætatem “period of life,” from ævum “lifetime, eternity, age;” cf. Mid.Pers. awâm, âwâm “time, season,” Av. âyav- “duration, period, time of life,” Skt. âyuh- “life, health”. All
from PIE *aiw-, *ayu- “vital force, life, long life, eternity.”

Etymology (PE): Senn from Ar. senn “age, lifetime”. Asr from Ar.