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

To confine or keep within limits. → restricted three-body problem.

From L. restrictus, p.p. of restringere "to restrict, bind fast, restrain," from → re- "back" + stringere "to draw tight."

Forudâštan "to keep down, hold under control, bring to a halt" (Steingass, Dehxodâ), from foru- "down, downward," → de-, + dâšt past stem of dâštan "to have, to possess" (Mid.Pers. dâštan; O.Pers./Av. root dar- "to hold, keep back, maintain, keep in mind;" cf. Skt. dhr-, dharma- "law;" Gk. thronos "elevated seat, throne;" L. firmus "firm, stable;" Lith. daryti "to make;" PIE *dher- "to hold, support") + -an infinitive suffix.
Forudâridan, from foru- + dâr present stem of dâštan + -idan

A special case of the → three-body problem in which the → mass of one of the bodies is negligible compared to that of the two others. If the relative motion of the two massive components is a circle, the situation is referred to as the → circular restricted three-body problem. An example would be a space probe moving in the → gravitational fields of the → Earth and the → Moon, which revolve very nearly in circles about their common → center of mass.

→ restrict; → three; → body; → problem.

The act of restricting, the state or the condition of being restricted.

Verbal noun, → restrict + → -tion.