perpendicularity

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the relation of opposition between things at right angles
• Syn:
orthogonality, orthogonal opposition
• Derivationally related forms:
perpendicular
• Hypernyms:
opposition
2. the quality of being at right angles to a given line or plane (especially the plane of the horizon)
• Derivationally related forms:
perpendicular
• Hypernyms:
rectangularity, oblongness