major planet

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major planet (plural major planets)

  1. (astronomy) Any of the 8 celestial bodies which orbit the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
  2. (astronomy) Any planet that is significantly larger and more massive than Earth, containing large amounts of hydrogen and helium, such as Jupiter and Neptune.[1]
  3. (astronomy) Those planets that are larger than the Earth; specifically Jupiter , Saturn , Uranus , Neptune (in the Solar System)
  4. (astronomy) a celestial body that fits the 2006 IAU definition of planet



  • (larger than Earth): minor planet (smaller than Earth (in the Solar System))
  • (2006 IAU definition of planet): dwarf planet (a planet that does not fit the 2006 IAU defintion of planet (ie. Pluto))

Related terms[edit]


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