perpendicularity Meaning, Definition & Usage

  1. noun the relation of opposition between things at right angles
    orthogonal opposition; orthogonality.
  2. noun the quality of being at right angles to a given line or plane (especially the plane of the horizon)

WordNet

Per`pen*dic`u*lar"i*ty noun
Etymology
Cf. F. perpendicularité.
Definitions
  1. The quality or state of being perpendicular.

Webster 1913