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adj. Mathematics Intersecting at or forming right angles.

adj. Being at right angles to the horizontal; vertical. See Synonyms at vertical.

adj. Of or relating to a style of English Gothic architecture of the 14th and 15th centuries, characterized by emphasis of the vertical element.

ad. In a perpendicular position.

n. Mathematics A line or plane perpendicular to a given line or plane.

n. A perpendicular position.

n. A device, such as a plumb line, used in marking the vertical from a given point.

n. A vertical or nearly vertical line or plane.

adj. At or forming a right angle (to).

n. A line or plane that is perpendicular to another.

n. A device such as a plumb line that is used in making or marking a perpendicular line.

adj. 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.

adj. At right angles to a given line or surface.

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

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

Perfectly vertical; at right angles with the plane of the horizon; passing (if extended through the center of the earth; coinciding with the direction of gravity.

In geometry, meeting a given line or surface (to which it is said to be perpendicular) at right angles.

In zoology, forming a right angle with the longitudinal or latitudinal axis of the body: as, a perpendicular head; epimeron perpendicular, etc.

n. A line at right angles to the plane of the horizon; a line that coincides in direction with a radius of the earth or with the direction of gravity.

n. 2. In geometry, a line that meets another line or a place at right angles, or makes equal angles with it on every side.

n. In gunnery, a small instrument for finding the center-line of a piece of ordnance, in the operation of pointing it at an object; a gunner's level.

n. In ship-building, one of the three conventional lines perpendicular to the line of the keel, used as reference lines from which measurements in the fore-and-aft direction are taken.

n. a straight line at right angles to another line

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

adj. at right angles to the plane of the horizon or a base line

adj. intersecting at or forming right angles

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

n. an extremely steep face

adj. extremely steep

"Napping on the couch is not a long-term solution, but the couch does come with a built-in perpendicular, which the bed does not, so that's good."

upright    plumb    upended    unsloped    rectangular    normal    orthogonal    right    steep   

straight line    face   

erect    precipitous    to erect a perpendicular    perpendicular lift    perpendicular style    perpendicular plate    to let fall a perpendicular   

normal    orthogonal   

curricular    extracurricular    particular    testicular    vehicular   

vertical    precipitous    rocky    jagged    circular    inaccessible    diagonal    oblique    upper    upright