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Noun: planetology  pla-nu'tó-lu-jee
  1. The study of planets, planetary systems and the solar system
    - planetary science

Derived forms: planetologies

Encyclopedia: Planetology

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planetal
planetarium
planetary
planetary gear
planetary house
planetary nebula
planetary science
planetesimal
planetesimal hypothesis
planetoid
planetology
plane-tree family
plangency
plangent
planimeter
planing machine
planish
planisphere
planispheric
plank
plank down