Perpendicular

Definition of Perpendicular

Per`pen`dic´u`lar
a.1.Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.
2.(Geom.) At right angles to a given line or surface; as, the line ad is perpendicular to the line bc.
Perpendicular style
(Arch.) a name given to the latest variety of English Gothic architecture, which prevailed from the close of the 14th century to the early part of the 16th; - probably so called from the vertical style of its window mullions.
n.1.A line at right angles to the plane of the horizon; a vertical line or direction.
2.(Geom.) A line or plane falling at right angles on another line or surface, or making equal angles with it on each side.

Related Words

air line, axis, azimuth circle, beeline, chord, diagonal, diameter, direct line, directrix, edge, erect, great-circle course, normal, orthodiagonal, orthogonal, orthometric, plumb, plunging, precipitous, radius, radius vector, rectangular, right angle, right line, right-angle, right-angled, right-angular, secant, segment, sheer, shortcut, side, stand-up, steep, straight, straight course, straight line, straight stretch, straight-up, straight-up-and-down, straightaway, streamline, tangent, transversal, up-and-down, vector, vertical, vertical circle
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