An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 3 Search : autumn
autumn
  پاییز   
pâyiz (#)

Fr.: automne   

The season of the year between summer and winter; it begins in the northern hemisphere at the → autumnal equinox and ends at the → winter solstice.

O.Fr., from L. autumnus, a word probably of Etruscan origin.

Pâyiz, from Mid.Pers. pâdiz or pâtez, from Proto-Iranian *pâti-z(a)ya- "near winter," from pâti "near" + *z(a)ya- "winter," compare with Av. zyan- or zyam- "winter" (Skt. heman, Gk. xeimon, L. hiems).

autumn equinox
  هموگان ِ پاییزی   
hamugân-e pâyizi

Fr.: équinoxe d'automne   

autumnal equinox.

autumn; → equinox.

autumnal equinox
  هموگان ِ پاییزی   
hamugân-e pâyizi

Fr.: équinoxe d'automne   

One of the two points where the → ecliptic crosses the → celestial equator. At the autumnal equinox the Sun appears to be moving across the equator from the northern celestial hemisphere to the southern celestial hemisphere. The instant of the event.

autumn; → -al; → equinox.