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

Hypotrochoid :: Hypotrochoid (n.) A curve, traced by a point in the radius, or radius produced, of a circle which rolls upon the concave side of a fixed circle. See Hypocycloid, Epicycloid, and Trochoid..

Equatorial :: Equatorial (n.) An instrument consisting of a telescope so mounted as to have two axes of motion at right angles to each other, one of them parallel to the axis of the earth, and each carrying a graduated circle, the one for measuring declination, and the other right ascension, or the hour angle, so that the telescope may be directed, even in the daytime, to any star or other object whose right ascension and declination are known. The motion in right ascension is sometimes communicated by clockw

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..

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..

Ruelle :: Ruelle (n.) A private circle or assembly at a private house; a circle.

Enring :: Enring (v. t.) To encircle.

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.

Enwind :: Enwind (v. t.) To wind about; to encircle.

Log-chip :: Log-chip (n.) A thin, flat piece of board in the form of a quadrant of a circle attached to the log line; -- called also log-ship. See 2d Log, n., 2..

Ring :: Ring (v. t.) To surround with a ring, or as with a ring; to encircle..

Belt :: Belt (v. t.) To encircle with, or as with, a belt; to encompass; to surround..

Incenter :: Incenter (n.) The center of the circle inscribed in a triangle.

Subarcuate :: Subarctic (a.) Approximately arctic; belonging to a region just without the arctic circle.

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..

Encyclopedian :: Encyclopedian (a.) Embracing the whole circle of learning, or a wide range of subjects..

Semicircle :: Semicircle (n.) An instrument for measuring angles.

Magical :: Magical (a.) Performed by, or proceeding from, occult and superhuman agencies; done by, or seemingly done by, enchantment or sorcery. Hence: Seemingly requiring more than human power; imposing or startling in performance; producing effects which seem supernatural or very extraordinary; having extraordinary properties; as, a magic lantern; a magic square or circle..

Azimuthal :: Azimuthal (a.) Of or pertaining to the azimuth; in a horizontal circle.

Definition :: Definition (n.) Act of ascertaining and explaining the signification; a description of a thing by its properties; an explanation of the meaning of a word or term; as, the definition of circle; the definition of wit; an exact definition; a loose definition..

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