Definition of circle

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Circle (n.) The line that bounds such a figure; a circumference; a ring.

Lern More About Circle

Ray :: Ray (n.) One of a number of lines or parts diverging from a common point or center, like the radii of a circle; as, a star of six rays..
Center :: Center (n.) A point equally distant from the extremities of a line, figure, or body, or from all parts of the circumference of a circle; the middle point or place..
Equator :: Equator (n.) The great circle of the celestial sphere, coincident with the plane of the earth's equator; -- so called because when the sun is in it, the days and nights are of equal length; hence called also the equinoctial, and on maps, globes, etc., the equinoctial line..
Enwheel :: Enwheel (v. t.) To encircle.
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..
Homography :: Homography (n.) A relation between two figures, such that to any point of the one corresponds one and but one point in the other, and vise versa. Thus, a tangent line rolling on a circle cuts two fixed tangents of the circle in two sets of points that are homographic..
Fillet :: Fillet (n.) A little band, especially one intended to encircle the hair of the head..
Cyclical :: Cyclical (a.) Of or pertaining to a cycle or circle; moving in cycles; as, cyclical time..
Circumcenter :: Circumcenter (n.) The center of a circle that circumscribes a triangle.
Eccentric :: Eccentric (a.) Not having the same center; -- said of circles, ellipses, spheres, etc., which, though coinciding, either in whole or in part, as to area or volume, have not the same center; -- opposed to concentric..
Circle :: 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..
Concentrical :: Concentrical (a.) Having a common center, as circles of different size, one within another..
Hemicycle :: Hemicycle (n.) A half circle; a semicircle.
Septfoil :: Septfoil (n.) A typical figure, consisting of seven equal segments of a circle, used to denote the gifts of the Holy Chost, the seven sacraments as recognized by the Roman Catholic Church, etc..
Girt :: Girt (v.) To gird; to encircle; to invest by means of a girdle; to measure the girth of; as, to girt a tree..
Environ :: Environ (v. t.) To surround; to encompass; to encircle; to hem in; to be round about; to involve or envelop.
Perfoliate :: Perfoliate (a.) Surrounded by a circle of hairs, or projections of any kind..
Circuit :: Circuit (n.) That which encircles anything, as a ring or crown..
Sectoral :: Sectoral (a.) Of or pertaining to a sector; as, a sectoral circle..
Peritricha :: Peritricha (n. pl.) A division of ciliated Infusoria having a circle of cilia around the oral disk and sometimes another around the body. It includes the vorticellas. See Vorticella.
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