perpendicularity   (Sound)

The perpendicularity has 2 Senses.

• perpendicularity, orthogonality, orthogonal opposition
• 垂直
• the relation of opposition between things at right angles
• 直角であるものの間の対照の関係

• perpendicularity
• 垂直
• the quality of being at right angles to a given line or plane (especially the plane of the horizon)
• 所定の線や面（特に水平の面）に対して直角であるという特質