See Also: biplane(dictionary)
biplane(dictionary)
biplane angiography(medicine)

biplane (iou)



biplane noun. L19.
[from BI- + PLANE noun3, noun4.]
Math. Either of two planes tangential to a surface at the same point. L19-E20.
An aeroplane having two sets of wings, one above the other. L19.
bi'planar adjective (Math.) situated in two tangent planes M19.