biplane definition

  • noun:
    • An airplane having two pairs of wings fixed at various levels, particularly one overhead plus one underneath the fuselage.
    • An airplane which has had two sets of wings, one over the other
    • An aëroplane with two main supporting surfaces one above the various other.
    • In mathematics, the pair of coincident airplanes that the tangent cone of a node decreases, when that node is a binode.
    • A flying- or a gliding-machine where two main superposed aëroplane areas are depended upon to sustain the device in the air.
    • traditional aircraft; has actually two wings one over the various other
  • adjective:
    • Having, or consisting of, two superposed airplanes, aërocurves, or even the like; of or regarding a biplane.

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