revolution gardeš (#) Fr.: révolution The movement of a celestial body which is in orbit around another. It is often measured as the → orbital period. Verbal noun of → revolve. |
sidereal revolution period dowre-ye gardeš-e axtari (#) Fr.: période de révolution sidérale The time taken by a planet or satellite to complete one revolution about its primary with respect to stars. For Earth, same as → sidereal year. → sidereal; → revolution; → period. |