biplanes

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  4. Furnishings and Equipment (hierarchy name)
  5. Transportation Vehicles (hierarchy name)
  6. vehicles (transportation)
  7. air and space transportation vehicles
  8. aircraft
  9. [aircraft by form]
  10. heavier than air aircraft
  11. fixed-wing aircraft
  12. [fixed-wing aircraft by number of wings]
  13. biplanes
Scope note
Airplanes with two sets of wings, one above and usually slightly forward of the other.
biplanes
Accepted term: 29-Apr-2024