2. Consisting of planets; as, a planetary system.
5. Having the nature of a planet; erratic; revolving; wandering. Erratical and planetary life. Planetary days, the days of the week as shared among the planets known to the ancients, each having its day. Hutton. Planetary nebula, a nebula exhibiting a uniform disk, like that of a planet.
Origin: Cf. L. Planetarius an astrologer, F. Planetaire planetary. See Planet.