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.
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.
Hear it pronounced