# Circle vs. Sphere

## Difference Between Circle and Sphere

#### Circlenoun

A plane curve everywhere equidistant from a given fixed point, the center.

#### Spherenoun

(Mathematics) A three-dimensional surface, all points of which are equidistant from a fixed point.

#### Circlenoun

A planar region bounded by a circle.

#### Spherenoun

A spherical object or figure.

#### Circlenoun

Something, such as a ring, shaped like such a plane curve.

#### Spherenoun

A celestial body, such as a planet or star.

#### Circlenoun

A circular or nearly circular course, circuit, or orbit:a satellite's circle around the earth.

#### Spherenoun

The sky, appearing as a hemisphere to an observer

*the sphere of the heavens.*

#### Circlenoun

A traffic circle.

#### Spherenoun

Any of a series of concentric, transparent, revolving globes that together were once thought to contain the moon, sun, planets, and stars.

#### Circlenoun

A series or process that finishes at its starting point or continuously repeats itself; a cycle.

#### Spherenoun

A range or extent of knowledge, interest, or activity

*a problem that falls within the sphere of biophysics.*

#### Circlenoun

A group of people sharing an interest, activity, or achievement:well-known in artistic circles.

#### Spherenoun

A social level or part of society or group

*knew few people beyond his partner's sphere.*

#### Circlenoun

A territorial or administrative division, especially of a province, in some European countries.

#### Spherenoun

A range of power or influence

*within the sphere of the empire.*

#### Circlenoun

A sphere of influence or interest; domain.

#### Sphereverb

To form into a sphere.

#### Circlenoun

(Logic)A vicious circle.

#### Sphereverb

To put in or within a sphere.

#### Circleverb

To make or form a circle around:The hedge circles the fountain.

#### Spherenoun

(mathematics) A regular three-dimensional object in which every cross-section is a circle; the figure described by the revolution of a circle about its diameter .

#### Circleverb

To move in a circle around:The ship circled the island.

#### Spherenoun

A spherical physical object; a globe or ball.

#### Circleverb

To move in a circle.

#### Spherenoun

The apparent outer limit of space; the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded.

#### 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).

*The set of all points (x, y) such that (x-1)*

^{2}+ y^{2}*r*

^{2}is a circle of radius r around the point (1, 0).#### Spherenoun

Any of the concentric hollow transparent globes formerly believed to rotate around the Earth, and which carried the heavenly bodies; there were originally believed to be eight, and later nine and ten; friction between them was thought to cause a harmonious sound (the music of the spheres).

#### 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.

#### Spherenoun

(mythology) An area of activity for a planet; or by extension, an area of influence for a god, hero etc.

#### Circlenoun

Any thin three-dimensional equivalent of the geometric figures.

*Put on your dunce-cap and sit down on that circle.*

#### Spherenoun

(figuratively) The region in which something or someone is active; one's province, domain.

#### Circlenoun

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

*move in a circle*

#### Spherenoun

(geometry) The set of all points in three-dimensional Euclidean space (or n-dimensional space, in topology) that are a fixed distance from a fixed point .

#### Circlenoun

Orbit.

#### Spherenoun

(logic) The extension of a general conception, or the totality of the individuals or species to which it may be applied.

#### Circlenoun

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

*inner circle;*

*circle of friends*

#### Sphereverb

(transitive) To place in a sphere, or among the spheres; to ensphere.

#### 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.

#### Sphereverb

(transitive) To make round or spherical; to perfect.

#### 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.

#### Spherenoun

a particular environment or walk of life;

*his social sphere is limited*

*it was a closed area of employment*

*he's out of my orbit*

#### Circlenoun

(South Africa) A traffic circle or roundabout.

#### Spherenoun

any spherically shaped artifact

#### Circlenoun

(obsolete) Compass; circuit; enclosure.

#### Spherenoun

the geographical area in which one nation is very influential

#### 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.

#### Spherenoun

a particular aspect of life or activity;

*he was helpless in an important sector of his life*

#### Circlenoun

A series ending where it begins, and repeating itself.

#### Spherenoun

a solid figure bounded by a spherical surface (including the space it encloses)

#### Circlenoun

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

#### Spherenoun

a three-dimensional closed surface such that every point on the surface is equidistant from the center

#### Circlenoun

Indirect form of words; circumlocution.

#### Spherenoun

the apparent surface of the imaginary sphere on which celestial bodies appear to be projected

#### Circlenoun

A territorial division or district.

*The ten Circles of the Holy Roman Empire were those principalities or provinces which had seats in the German Diet.*

#### Circlenoun

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

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

#### Circleverb

(transitive) To travel around along a curved path.

#### Circleverb

(transitive) To surround.

#### Circleverb

(transitive) To place or mark a circle around.

*Circle the jobs that you are interested in applying for.*

#### Circleverb

(intransitive) To travel in circles.

*Vultures circled overhead.*

#### 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;

*he calculated the circumference of the circle*

#### Circlenoun

an unofficial association of people or groups;

*the smart set goes there*

*they were an angry lot*

#### Circlenoun

something approximating the shape of a circle;

*the chairs were arranged in a circle*

#### Circlenoun

movement once around a course;

*he drove an extra lap just for insurance*

#### Circlenoun

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

*the accident blocked all traffic at the rotary*

#### 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;

*they had excellent seats in the dress circle*

#### Circlenoun

any circular or rotating mechanism;

*the machine punched out metal circles*

#### Circleverb

travel around something;

*circle the globe*

#### Circleverb

move in circles

#### Circleverb

be around;

*Developments surround the town*

*The river encircles the village*

#### Circleverb

form a circle around;

*encircle the errors*