An instrument of observation, whose graduated limb consists of an entire circle. When fixed to a wall in an observatory, it is called a mural circle; when mounted with a telescope on an axis and in Y's, in the plane of the meridian, a meridian or transit circle; when involving the principle of reflection, like the sextant, a reflecting circle; and when that of repeating an angle several times continuously along the graduated limb, a repeating circle.
A two-dimensional geometric figure, a disk, consisting of the set of all those points of a plane at a distance less than or equal to a fixed distance (radius) from a given point.
A form of argument in which two or more unproved statements are used to prove each other; inconclusive reasoning.
A line comprising two semicircles of 30 yards radius centred on the wickets joined by straight lines parallel to the pitch used to enforce field restrictions in a one-day match.
A bagginess of the skin below the eyes from lack of sleep.
A series ending where it begins, and repeating itself.
A territorial division or district.
Any thin three-dimensional equivalent of the geometric figures.
Any shape, curve or arrangement of objects that approximates to or resembles the geometric figures.
A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from a given point (center).
A curve that more or less forms part or all of a circle.
A specific group of persons; especially one who shares a common interest.
The orbit of an astronomical body.
A ritual circle that is cast three times deosil and closes three times widdershins either in the air with a wand or literally with stones or other items used for worship.
A traffic circle or roundabout.
To travel around along a curved path.
To travel in circles.
To place or mark a circle around.
To surround.