Interplanetary :: Interplanetary (a.) Between planets; as, interplanetary spaces..
Planet :: Planet (n.) A celestial body which revolves about the sun in an orbit of a moderate degree of eccentricity. It is distinguished from a comet by the absence of a coma, and by having a less eccentric orbit. See Solar system..
Planet :: Planet (n.) A star, as influencing the fate of a men..