perpendicularity

from WordNet (r) 3.0 (2006)

perpendicularity
    n 1: the relation of opposition between things at right angles
         [syn: {orthogonality}, {perpendicularity}, {orthogonal
         opposition}]
    2: the quality of being at right angles to a given line or plane
       (especially the plane of the horizon)

from The Collaborative International Dictionary of English v.0.48

Perpendicularity \Per`pen*dic`u*lar"i*ty\, n. [Cf. F.
   perpendicularit['e].]
   The quality or state of being perpendicular.
   [1913 Webster]

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