PERPENDICULAR

perpendicular. perpendicular, directly, downe right

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perpendicular. Perpendicular, a. passing at right angles, upright

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Per′pen‐dic″u‐lar (?), a. [[L. perpendicularis, perpendicularius: cf. F. perpendiculaire. See Perpendicle, Pension.]] 1. 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. 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.