Per`pen*dic"u*lar (?), a. [L. perpendicularis, perpendicularius: cf. F. perpendiculaire. See Perpendicle, Pension.]

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.

 

© Webster 1913.


Per`pen*dic"u*lar (?), 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.

 

© Webster 1913.

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