Definition of circle

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Circle (n.) A plane figure, bounded by a single curve line called its circumference, every part of which is equally distant from a point within it, called the center..

Lern More About Circle

Sector :: Sector (n.) An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector..
Toga :: Toga (n.) The loose outer garment worn by the ancient Romans, consisting of a single broad piece of woolen cloth of a shape approaching a semicircle. It was of undyed wool, except the border of the toga praetexta..
Armillary :: Armillary (n.) Pertaining to, or resembling, a bracelet or ring; consisting of rings or circles..
Incirclet :: Incirclet (n.) A small circle.
Epicycloid :: Epicycloid (n.) A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle.
Radian :: Radian (n.) An arc of a circle which is equal to the radius, or the angle measured by such an arc..
Orthodromics :: Orthodromics (n.) The art of sailing in a direct course, or on the arc of a great circle, which is the shortest distance between any two points on the surface of the globe; great-circle sailing; orthodromy..
Encompass :: Encompass (v. t.) To circumscribe or go round so as to surround closely; to encircle; to inclose; to environ; as, a ring encompasses the finger; an army encompasses a city; a voyage encompassing the world..
Orb :: Orb (v. t.) To form into an orb or circle.
Globe :: Globe (n.) A body of troops, or of men or animals, drawn up in a circle; -- a military formation used by the Romans, answering to the modern infantry square..
Circination :: Circination (n.) A circle; a concentric layer.
Parquet :: Parquet (n.) A body of seats on the floor of a music hall or theater nearest the orchestra; but commonly applied to the whole lower floor of a theater, from the orchestra to the dress circle; the pit..
Colure :: Colure (n.) One of two great circles intersecting at right angles in the poles of the equator. One of them passes through the equinoctial points, and hence is denominated the equinoctial colure; the other intersects the equator at the distance of 90� from the former, and is called the solstitial colure..
Semicircle :: Semicircle (n.) An instrument for measuring angles.
Annular :: Annular (a.) Banded or marked with circles.
Quadrant :: Quadrant (n.) The quarter of a circle, or of the circumference of a circle, an arc of 90�, or one subtending a right angle at the center..
Round :: Round (prep.) On every side of, so as to encompass or encircle; around; about; as, the people atood round him; to go round the city; to wind a cable round a windlass..
Eccentric :: Eccentric (a.) Deviating or departing from the center, or from the line of a circle; as, an eccentric or elliptical orbit; pertaining to deviation from the center or from true circular motion..
Quadrature :: Quadrature (a.) The position of one heavenly body in respect to another when distant from it 90�, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition..
Circle :: Circle (n.) A series ending where it begins, and repeating itself..
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