Trans-Neptunian Object Definition
 trănsnĕp-to͝onē-ən, -tyo͝o-, trănz- 
    noun
  
 A celestial object that orbits the sun at a greater distance on average than Neptune.
 American Heritage 
Other Word Forms of Trans-Neptunian Object
Noun
Singular:
 trans-Neptunian objectPlural:
 trans-neptunian-objectsFind Similar Words
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