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

1) To found, institute, build, or bring into being on a firm or stable basis.
2) To show to be valid or true; prove.

From O.Fr. establiss-, stem of establir, from L. stabilire "make stable," from stabilis "firm, stable," literally "able to stand," from stare "to stand;" PIE base *sta- "to stand" (cf. Mod.Pers. istâdan "to stand;" O.Pers./Av. sta- "to stand, stand still; set;" Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh;" stasis "a standing still;" Lith. statau "place;" Goth. standan; O.E. standan "to stand," stede "place").

Nešâxtan, nešâzidan "to establish; to fix in the ground, strengthen," from ne- "down, below," → ni-, + šâxtan, šâz-, variants of Mod./Mid.Pers. sâxtan, sâz- "to form, prepare, build, make," ultimately from Proto-Iranian *sac- "to fit, be suitable; to prepare."

1) The act or an instance of establishing.
2) The state or fact of being established.
3) Something established; a constituted order or system.
4) (often initial capital letter) The existing power structure in society; the dominant groups in society and their customs or institutions (Dictionary.com).

→ establish; → -ment.