Time required for a planet to circle its sun.
the time required for a celestial body within the solar system to complete one revolution with respect to the fixed stars—i.e., as observed from ... [1 related articles]
The revolution period of a planet round the Sun. Also the revolution period of a moon around a planet.
The period of revolution of a planet around the Sun or a satellite around its primary.
sidereal period The time it takes for a planet or satellite to make one complete circuit of its orbit (360°) relative to the stars. Earth's sidereal period (or sidereal year) is equal to 365.2564 mean solar days.
The period of time that it takes an object in space to complete one full orbit in relation to the stars.