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

1) A helpful act by somebody for somebody else as a job, duty, or favor.
2) A system or organization supplying some public demand, e.g. transportation, telephone, health.
3) A facility providing maintenance and repair.

M.E., from O.Fr. servise, from L. servitium "slavery, servitude," from servus "slave," servire "to serve," originally "be a slave;" cognate with Av. har- "to guard, watch," → server.

Zâvari "service" (Dehxodâ) → server.

Observation approved by the selection committee of an observatory which is carried out by the staff astronomers of the observatory.

→ service; → observation.