An Etymological Dictionary of Astronomy and Astrophysics

1. A group of authorities and leaders in a field of scholarship, art, etc., who are often permitted to dictate standards, prescribe methods, and criticize new ideas.
   

2. An association or institution for the advancement of art, literature, or science (Dictionary.com).

Etymology (EN): From Fr. Académie, from L. Academia, from Gk. Akademeia “grove of Akademos,” a legendary Athenian of the Trojan War tales, whose estate, six stadia from Athens, was the enclosure where Plato taught his school.

Etymology (PE): Farhangestân, literally “site of culture and education,” from farhang, → culture, + -estân suffix of place and time, → summer.