PLANETARIUM, an astronomical machine, so called from its representing the motions, orbits, &c.
Planetary of the planets, agreeable to the Copernican system. See ASTRONOMY, n° 317. and Plate LI.
Plant. PLANETARY, something that relates to the planets. Hence we say, planetary worlds, planetary inhabitants, &c. Huygens and Fontenelle bring several probable arguments for the reality of planetary animals, plants, men, &c. See PLANET.