perpendicularity Definition

perpendicular
adj

1. Vertical; upright; in the direction of gravity.
2. At right angles; forming a right angle with (a particular line or surface).

Form: perpendicular to something (also)
3. Said of a cliff, etc: precipitous; steep.
4. archit.
Referring or relating to the form of English Gothic architecture from late 14c to 16c, characterized by the use of slender vertical lines, vaulting and large areas of windows decorated with simple tracery and stained glass.
Form: Perpendicular (usually)

noun

1. A perpendicular line, position or direction.
2. An instrument for determining the vertical line.

Derivative: perpendicularity
noun

Derivative: perpendicularly
adverb

Etymology: 14c: from Latin perpendicularis, from perpendiculum a plumbline, from pendere to hang.