tertiary planet

Definitions

• the third planet, usually counting outwards from the central sun
• (archaic) A planet of the third-degree/third-order. The planet of a planet (secondary planet) of a planet (primary planet). An object (moonmoon) which orbits an object (moon) which orbits an object (planet) which orbits a star.
• (astrology) An aspect in astrology, a calculated node in a reading, that is not a real planet.