Definition of circle

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Circle (n.) An instrument of observation, the graduated limb of which consists of an entire circle..

Lern More About Circle

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..
Interosculant :: Interosculant (a.) Mutually touching or intersecting; as, interosculant circles..
Circ :: Circ (n.) An amphitheatrical circle for sports; a circus.
Gnomon :: Gnomon (n.) The index of the hour circle of a globe.
Axis :: Axis (n.) A straight line with respect to which the different parts of a magnitude are symmetrically arranged; as, the axis of a cylinder, i. e., the axis of a cone, that is, the straight line joining the vertex and the center of the base; the axis of a circle, any straight line passing through the center..
Strap :: Strap (n.) The flat part of the corolla in ligulate florets, as those of the white circle in the daisy..
Clique :: Clique (v. i.) A narrow circle of persons associated by common interests or for the accomplishment of a common purpose; -- generally used in a bad sense.
Tropic :: Tropic (n.) One of the two small circles of the celestial sphere, situated on each side of the equator, at a distance of 23? 28/, and parallel to it, which the sun just reaches at its greatest declination north or south, and from which it turns again toward the equator, the northern circle being called the Tropic of Cancer, and the southern the Tropic of Capricorn, from the names of the two signs at which they touch the ecliptic..
Girdle :: Girdle (n.) That which girds, encircles, or incloses; a circumference; a belt; esp., a belt, sash, or article of dress encircling the body usually at the waist; a cestus..
Chord :: Chord (n.) A right line uniting the extremities of the arc of a circle or curve.
Describe :: Describe (v. t.) To represent by drawing; to draw a plan of; to delineate; to trace or mark out; as, to describe a circle by the compasses; a torch waved about the head in such a way as to describe a circle..
Roundelay :: Roundelay (n.) A dance in a circle.
Flanch :: Flanch (n.) A bearing consisting of a segment of a circle encroaching on the field from the side.
Wreathe :: Wreathe (n.) To twine or twist about; to surround; to encircle.
Longitude :: Longitude (n.) The distance in degrees, reckoned from the vernal equinox, on the ecliptic, to a circle at right angles to the ecliptic passing through the heavenly body whose longitude is designated; as, the longitude of Capella is 79¡..
Corona :: Corona (n.) A crown or circlet suspended from the roof or vaulting of churches, to hold tapers lighted on solemn occasions. It is sometimes formed of double or triple circlets, arranged pyramidically. Called also corona lucis..
Ellipticity :: Ellipticity (n.) Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is /..
Atrocha :: Atrocha (n.) A kind of chaetopod larva in which no circles of cilia are developed.
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..
Sectoral :: Sectoral (a.) Of or pertaining to a sector; as, a sectoral circle..
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