ASL STEM

Definition

1. any of the nine celestial bodies that move round our sun in various elliptical orbits. 2. (the planet) the earth. 3. any celestial body which orbits a star and which is of substantial size but is not massive enough to become a star itself planetary adj. 4. a. any of the celestial bodies, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, or Pluto (Pluto now being classed as a dwarf planet), that move round our sun in various elliptical orbits like some watcher of the skies when a new planet swims into his ken Keats. b. (the planet) the Earth. c. any celestial body which orbits a star and which is of substantial size but is not massive enough to become a star itself. 5. in astrology, any of the nine celestial bodies that orbit our sun, together with the sun and moon, thought of in terms of their influence on a person's life, etc. 6. the sphere of activity of (a person or group) 7. informal out of touch with reality

Source: The Penguin English Dictionary. London: Penguin, 2007. Credo Reference. Web. 03 September 2012.