perpendicular

1. a. 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. Source: opted

2. a. At right angles to a given line or surface; as, the line ad is perpendicular to the line bc. Source: opted

3. n. A line at right angles to the plane of the horizon; a vertical line or direction. Source: opted

4. n. A line or plane falling at right angles on another line or surface, or making equal angles with it on each side. Source: opted

5. adj. intersecting at or forming right angles Source: wordnet

6. adj. at right angles to the plane of the horizon or a base line Source: wordnet

7. adj. so steep as to be nearly vertical Source: wordnet

8. n. a straight line at right angles to another line Source: wordnet

9. n. a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting Source: wordnet

10. n. a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point Source: wordnet

11. n. an extremely steep face Source: wordnet

12. 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. 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. Source: webster

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