Definition of perpendicular

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Perpendicular (a.) At right angles to a given line or surface; as, the line ad is perpendicular to the line bc..

Lern More About Perpendicular

Perpendicularly :: Perpendicularly (adv.) In a perpendicular manner; vertically.
Aweigh :: Aweigh (adv.) Just drawn out of the ground, and hanging perpendicularly; atrip; -- said of the anchor..
Sine :: Sine (n.) The perpendicular itself. See Sine of angle, below..
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..
Hoist :: Hoist (n.) The perpendicular height of a flag, as opposed to the fly, or horizontal length when flying from a staff..
Apothem :: Apothem (n.) The perpendicular from the center to one of the sides of a regular polygon.
Sarcina :: Sarcina (n.) A genus of bacteria found in various organic fluids, especially in those those of the stomach, associated with certain diseases. The individual organisms undergo division along two perpendicular partitions, so that multiplication takes place in two directions, giving groups of four cubical cells. Also used adjectively; as, a sarcina micrococcus; a sarcina group..
Elevation :: Elevation (n.) A geometrical projection of a building, or other object, on a plane perpendicular to the horizon; orthographic projection on a vertical plane; -- called by the ancients the orthography..
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..
Orthogonally :: Orthogonally (adv.) Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally..
Column :: Column (n.) A perpendicular set of lines, not extending across the page, and separated from other matter by a rule or blank space; as, a column in a newspaper..
Scarp :: Scarp (v. t.) To cut down perpendicularly, or nearly so; as, to scarp the face of a ditch or a rock..
Gnomon :: Gnomon (n.) A style or column erected perpendicularly to the horizon, formerly used in astronomocal observations. Its principal use was to find the altitude of the sun by measuring the length of its shadow..
Pole :: Pole (n.) A point upon the surface of a sphere equally distant from every part of the circumference of a great circle; or the point in which a diameter of the sphere perpendicular to the plane of such circle meets the surface. Such a point is called the pole of that circle; as, the pole of the horizon; the pole of the ecliptic; the pole of a given meridian..
Twibil :: Twibil (n.) A kind of mattock, or ax; esp., a tool like a pickax, but having, instead of the points, flat terminations, one of which is parallel to the handle, the other perpendicular to it..
Orthognathous :: Orthognathous (a.) Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to prognathous. See Gnathic index, under Gnathic..
Oblique :: Oblique (a.) Not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined..
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.
Plumb :: Plumb (adv.) In a plumb direction; perpendicularly.
Cathetus :: Cathetus (n.) One line or radius falling perpendicularly on another; as, the catheti of a right-angled triangle, that is, the two sides that include the right angle..
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