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

Gnomon :: Gnomon (n.) The index of the hour circle of a globe.
Semisextile :: Semisextile (n.) An aspect of the planets when they are distant from each other the twelfth part of a circle, or thirty degrees..
Consolidation :: Consolidation (n.) To organic cohesion of different circled in a flower; adnation.
Wreathe :: Wreathe (n.) To twine or twist about; to surround; to encircle.
Round :: Round (a.) Having a curved outline or form; especially, one like the arc of a circle or an ellipse, or a portion of the surface of a sphere; rotund; bulging; protuberant; not angular or pointed; as, a round arch; round hills..
Circle :: Circle (n.) The line that bounds such a figure; a circumference; a ring.
Plane :: Plane (a.) An ideal surface, conceived as coinciding with, or containing, some designated astronomical line, circle, or other curve; as, the plane of an orbit; the plane of the ecliptic, or of the equator..
Ellipse :: Ellipse (n.) An oval or oblong figure, bounded by a regular curve, which corresponds to an oblique projection of a circle, or an oblique section of a cone through its opposite sides. The greatest diameter of the ellipse is the major axis, and the least diameter is the minor axis. See Conic section, under Conic, and cf. Focus..
Compasses :: Compasses (n.) An instrument for describing circles, measuring figures, etc., consisting of two, or (rarely) more, pointed branches, or legs, usually joined at the top by a rivet on which they move..
Mole :: Mole (n.) A mound or massive work formed of masonry or large stones, etc., laid in the sea, often extended either in a right line or an arc of a circle before a port which it serves to defend from the violence of the waves, thus protecting ships in a harbor; also, sometimes, the harbor itself..
Inclinnometer :: Inclinnometer (n.) An apparatus to determine the inclination of the earth's magnetic force to the plane of the horizon; -- called also inclination compass, and dip circle..
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..
Incirclet :: Incirclet (n.) A small circle.
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..
Enring :: Enring (v. t.) To encircle.
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..
Circumferentor :: Circumferentor (n.) A graduated wheel for measuring tires; a tire circle.
Circuit :: Circuit (v. i.) To move in a circle; to go round; to circulate.
Circulation :: Circulation (n.) The act of moving in a circle, or in a course which brings the moving body to the place where its motion began..
Ecliptic :: Ecliptic (a.) A great circle drawn on a terrestrial globe, making an angle of 23¡ 28' with the equator; -- used for illustrating and solving astronomical problems..
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