Circle vs. Sphere

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).

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.

Circlenoun

Any thin three-dimensional equivalent of the geometric figures.

Circlenoun

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

Circlenoun

Orbit.

Circlenoun

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

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.

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.

Circlenoun

A territorial division or district.

Circlenoun

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

Circleverb

(transitive) To travel around along a curved path.

Circleverb

(transitive) To surround.

Circleverb

(transitive) To place or mark a circle around.

Circleverb

(intransitive) To travel in circles.

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.

Circlenoun

Compass; circuit; inclosure.

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.

Circlenoun

A circular group of persons; a ring.

Circlenoun

A series ending where it begins, and repeating itself.

Circlenoun

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.

Circlenoun

A territorial division or district.

Circleverb

To move around; to revolve around.

Circleverb

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

Circleverb

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

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;

Circlenoun

an unofficial association of people or groups;

Circlenoun

something approximating the shape of a circle;

Circlenoun

movement once around a course;

Circlenoun

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

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;

Circlenoun

any circular or rotating mechanism;

Circleverb

travel around something;

Circleverb

move in circles

Circleverb

be around;

Circleverb

form a circle around;

Circlenoun

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

Circlenoun

something in the shape of a circle

Circlenoun

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

Circlenoun

a curved upper tier of seats in a theatre or cinema

Circlenoun

short for striking circle

Circlenoun

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

Circleverb

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

Circleverb

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

Circleverb

form a ring around

Circleverb

draw a line around

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.

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 .

Spherenoun

A spherical physical object; a globe or ball.

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.

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).

Spherenoun

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

Spherenoun

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

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 .

Spherenoun

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

Sphereverb

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

Sphereverb

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

Spherenoun

A body or space contained under a single surface, which in every part is equally distant from a point within called its center.

Spherenoun

Hence, any globe or globular body, especially a celestial one, as the sun, a planet, or the earth.

Spherenoun

The apparent surface of the heavens, which is assumed to be spherical and everywhere equally distant, in which the heavenly bodies appear to have their places, and on which the various astronomical circles, as of right ascension and declination, the equator, ecliptic, etc., are conceived to be drawn; an ideal geometrical sphere, with the astronomical and geographical circles in their proper positions on it.

Spherenoun

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

Spherenoun

Circuit or range of action, knowledge, or influence; compass; province; employment; place of existence.

Spherenoun

Rank; order of society; social positions.

Spherenoun

An orbit, as of a star; a socket.

Sphereverb

To place in a sphere, or among the spheres; to insphere.

Sphereverb

To form into roundness; to make spherical, or spheral; to perfect.

Spherenoun

a particular environment or walk of life;

Spherenoun

any spherically shaped artifact

Spherenoun

the geographical area in which one nation is very influential

Spherenoun

a particular aspect of life or activity;

Spherenoun

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

Spherenoun

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

Spherenoun

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

Spherenoun

a round solid figure, or its surface, with every point on its surface equidistant from its centre.

Spherenoun

a spherical object; a ball or globe

Spherenoun

a globe representing the earth

Spherenoun

a celestial body

Spherenoun

the sky perceived as a vault upon or in which celestial bodies are represented as lying.

Spherenoun

each of a series of revolving concentrically arranged spherical shells in which celestial bodies were formerly thought to be set in a fixed relationship.

Spherenoun

an area of activity, interest, or expertise; a section of society or an aspect of life distinguished and unified by a particular characteristic

Sphereverb

enclose in or as if in a sphere

Sphereverb

form into a rounded or perfect whole

Sphere

A sphere (from Greek σφαῖρα—sphaira, ) is a geometrical object in three-dimensional space that is the surface of a ball (viz., analogous to the circular objects in two dimensions, where a circumscribes its ). Like a circle in a two-dimensional space, a sphere is defined mathematically as the set of points that are all at the same distance r from a given point in a three-dimensional space.