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planetary nebula

n.
1.a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star

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Word of the Day

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  • planetary house
  • planetary gear
  • planetary
  • planetarium
  • planetal
  • planet wheel
  • planet gear
  • planet
  • planera
  • planer
  • planetesimal
  • planetesimal hypothesis
  • planetoid
  • plangency
  • plangent
  • planimeter
  • planing machine
  • plank
  • plank down
  • plank over
  • raw recruit
  • crossover
  • nonresistant
  • marinara
  • luggage
  • re-establishment
  • optionally
  • auditory
  • riot
  • law of nature

  • Idiom of the Day

    fly the coop
    to escape
    The prisoner was able to fly the coop when the guard was not looking.



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