Circlenoun

(geometry) 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).

âThe set of all points (x, y) such that (x-1)^{2} + y^{2}â; âr^{2} is a circle of radius r around the point (1, 0).â;

Hypocycloidnoun

(geometry) The locus of a point on the circumference of a circle that rolls without slipping inside the circumference of another circle.

Circlenoun

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.

Hypocycloidnoun

A curve traced by a point in the circumference of a circle which rolls on the concave side in the fixed circle. Cf. Epicycloid, and Trochoid.

Circlenoun

Any thin three-dimensional equivalent of the geometric figures.

âPut on your dunce-cap and sit down on that circle.â;

Hypocycloidnoun

a line generated by a point on a circle that rolls around inside another circle

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Circlenoun

A curve that more or less forms part or all of a circle.

âmove in a circleâ;

Hypocycloid

In geometry, a hypocycloid is a special plane curve generated by the trace of a fixed point on a small circle that rolls within a larger circle. As the radius of the larger circle is increased, the hypocycloid becomes more like the cycloid created by rolling a circle on a line.

Circlenoun

Orbit.

Circlenoun

A specific group of persons; especially one who shares a common interest.

âinner circle;â; âcircle of friendsâ;

Circlenoun

(cricket) 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.

Circlenoun

(Wicca) 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.

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Circlenoun

(South Africa) A traffic circle or roundabout.

Circlenoun

(obsolete) Compass; circuit; enclosure.

Circlenoun

(astronomy) 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.

Circlenoun

A series ending where it begins, and repeating itself.

Circlenoun

(logic) A form of argument in which two or more unproved statements are used to prove each other; inconclusive reasoning.

Circlenoun

Indirect form of words; circumlocution.

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Circlenoun

A territorial division or district.

âThe ten Circles of the Holy Roman Empire were those principalities or provinces which had seats in the German Diet.â;

Circlenoun

(in the plural) A bagginess of the skin below the eyes from lack of sleep.

â''After working all night, she had circles under her eyes.â;

Circleverb

(transitive) To travel around along a curved path.

Circleverb

(transitive) To surround.

Circleverb

(transitive) To place or mark a circle around.

âCircle the jobs that you are interested in applying for.â;

Circleverb

(intransitive) To travel in circles.

âVultures circled overhead.â;

Circlenoun

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.

Circlenoun

The line that bounds such a figure; a circumference; a ring.

Circlenoun

An instrument of observation, the graduated limb of which consists of an entire circle.

Circlenoun

A round body; a sphere; an orb.

âIt is he that sitteth upon the circle of the earth.â;

Circlenoun

Compass; circuit; inclosure.

âIn the circle of this forest.â;

Circlenoun

A company assembled, or conceived to assemble, about a central point of interest, or bound by a common tie; a class or division of society; a coterie; a set.

âAs his name gradually became known, the circle of his acquaintance widened.â;

Circlenoun

A circular group of persons; a ring.

Circlenoun

A series ending where it begins, and repeating itself.

âThus in a circle runs the peasant's pain.â;

Circlenoun

A form of argument in which two or more unproved statements are used to prove each other; inconclusive reasoning.

âThat heavy bodies descend by gravity; and, again, that gravity is a quality whereby a heavy body descends, is an impertinent circle and teaches nothing.â;

Circlenoun

Indirect form of words; circumlocution.

âHas he given the lie,In circle, or oblique, or semicircle.â;

Circlenoun

A territorial division or district.

Circleverb

To move around; to revolve around.

âOther planets circle other suns.â;

Circleverb

To encompass, as by a circle; to surround; to inclose; to encircle.

âTheir heads are circled with a short turban.â; âSo he lies, circled with evil.â;

Circleverb

To move circularly; to form a circle; to circulate.

âThy name shall circle round the gaping through.â;

Circlenoun

ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point;

âhe calculated the circumference of the circleâ;

Circlenoun

an unofficial association of people or groups;

âthe smart set goes thereâ; âthey were an angry lotâ;

Circlenoun

something approximating the shape of a circle;

âthe chairs were arranged in a circleâ;

Circlenoun

movement once around a course;

âhe drove an extra lap just for insuranceâ;

Circlenoun

a road junction at which traffic streams circularly around a central island;

âthe accident blocked all traffic at the rotaryâ;

Circlenoun

street names for flunitrazepan

Circlenoun

a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra;

âthey had excellent seats in the dress circleâ;

Circlenoun

any circular or rotating mechanism;

âthe machine punched out metal circlesâ;

Circleverb

travel around something;

âcircle the globeâ;

Circleverb

move in circles

Circleverb

be around;

âDevelopments surround the townâ; âThe river encircles the villageâ;

Circleverb

form a circle around;

âencircle the errorsâ;

Circlenoun

a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the centre)

âdraw a circle with a compassâ;

Circlenoun

something in the shape of a circle

âthe lamp spread a circle of lightâ; âthey all sat round in a circleâ;

Circlenoun

a dark circular mark below each eye caused by illness or tiredness

âshe was pale and rather beautiful, with dark circles around deep, exhausted eyesâ;

Circlenoun

a curved upper tier of seats in a theatre or cinema

âshe sat in the front row of the circleâ;

Circlenoun

short for striking circle

Circlenoun

a group of people with a shared profession, interests, or acquaintances

âshe did not normally move in such exalted circlesâ;

Circleverb

move all the way around (someone or something), especially more than once

âthey were circling Athens airportâ; âwe circled round the islandâ;

Circleverb

move in a wide loop back towards one's starting point

âhe paced away from her, then circled backâ;

Circleverb

form a ring around

âthe abbey was circled by a huge wallâ;

Circleverb

draw a line around

âcircle the correct answersâ;

Circle

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant. The distance between any point of the circle and the centre is called the radius.