Definition of perpendicular

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

Lern More About Perpendicular

Plumb :: Plumb (v. t.) To adjust by a plumb line; to cause to be perpendicular; as, to plumb a building or a wall..
Waterfall :: Waterfall (n.) A fall, or perpendicular descent, of the water of a river or stream, or a descent nearly perpendicular; a cascade; a cataract..
Deep :: Deep (superl.) Extending far below the surface; of great perpendicular dimension (measured from the surface downward, and distinguished from high, which is measured upward); far to the bottom; having a certain depth; as, a deep sea..
Level :: Level (n.) A line or surface to which, at every point, a vertical or plumb line is perpendicular; a line or surface which is everywhere parallel to the surface of still water; -- this is the true level, and is a curve or surface in which all points are equally distant from the center of the earth, or rather would be so if the earth were an exact sphere..
Sine :: Sine (n.) The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity.
Perpendicular :: Perpendicular (a.) At right angles to a given line or surface; as, the line ad is perpendicular to the line bc..
Oblique :: Oblique (a.) Not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined..
Slant :: Slant (v. i.) Inclined from a direct line, whether horizontal or perpendicular; sloping; oblique..
Table :: Table (n.) A plane surface, supposed to be transparent and perpendicular to the horizon; -- called also perspective plane..
Tail :: Tail (n.) The part of a note which runs perpendicularly upward or downward from the head; the stem.
Bowline :: Bowline (n.) A rope fastened near the middle of the leech or perpendicular edge of the square sails, by subordinate ropes, called bridles, and used to keep the weather edge of the sail tight forward, when the ship is closehauled..
Kathetal :: Kathetal (a.) Making a right angle; perpendicular, as two lines or two sides of a triangle, which include a right angle..
Subsulphate :: Substyle (n.) A right line on which the style, or gnomon, of a dial is erected; being the common section of the face of the dial and a plane perpendicular to it passing through the style..
Lemniscate :: Lemniscate (n.) A curve in the form of the figure 8, with both parts symmetrical, generated by the point in which a tangent to an equilateral hyperbola meets the perpendicular on it drawn from the center..
Aweigh :: Aweigh (adv.) Just drawn out of the ground, and hanging perpendicularly; atrip; -- said of the anchor..
Vertical :: Vertical (a.) Of or pertaining to the vertex; situated at the vertex, or highest point; directly overhead, or in the zenith; perpendicularly above one..
Curtate :: Curtate (a.) Shortened or reduced; -- said of the distance of a planet from the sun or earth, as measured in the plane of the ecliptic, or the distance from the sun or earth to that point where a perpendicular, let fall from the planet upon the plane of the ecliptic, meets the ecliptic..
Palet :: Palet (n.) A perpendicular band upon an escutcheon, one half the breadth of the pale..
Obliquity :: Obliquity (n.) The condition of being oblique; deviation from a right line; deviation from parallelism or perpendicularity; the amount of such deviation; divergence; as, the obliquity of the ecliptic to the equator..
Over :: Over (prep.) Above the perpendicular height or length of, with an idea of measurement; as, the water, or the depth of water, was over his head, over his shoes..
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