per·pen·dic·u·lar
(pûŕpən-dĭḱyə-lər)
[Middle English perpendiculer, from Old French, from Latin perpendiculāris, from perpendiculum, plumb line, from perpendere, to weigh carefully, per-, per-, + pendere, to weigh.]
adjective
- Mathematics Intersecting at or forming right angles.
- Being at right angles to the horizontal; vertical. See synonyms at vertical
- Of or relating to a style of English Gothic architecture of the 14th and 15th centuries, characterized by emphasis of the vertical element.
adverb
- In a perpendicular position.
noun
- Mathematics A line or plane perpendicular to a given line or plane.
- A perpendicular position.
- A device, such as a plumb line, used in marking the vertical from a given point.
- A vertical or nearly vertical line or plane.
derivatives
- peŕpen·diću·laŕi·ty
- noun
- peŕpen·diću·lar·ly
- adverb