sphere

S0632200 (sfĭr)n.1. Mathematics A three-dimensional surface, all points of which are equidistant from a fixed point.2. A spherical object or figure.3. A celestial body, such as a planet or star.4. The sky, appearing as a hemisphere to an observer: the sphere of the heavens.5. Any of a series of concentric, transparent, revolving globes that together were once thought to contain the moon, sun, planets, and stars.6. a. A range or extent of knowledge, interest, or activity: a problem that falls within the sphere of biophysics. See Synonyms at field.b. A social level or part of society or group: knew few people beyond his partner's sphere.c. A range of power or influence: within the sphere of the empire.tr.v. sphered, spher·ing, spheres 1. To form into a sphere.2. To put in or within a sphere.

[Middle English spere, from Old French espere, from Latin sphaera, from Greek sphaira.]

sphe·ric′i·ty (sfî-rĭs′ĭ-tē) n.

sphere

(sfɪə) n1. (Mathematics) maths a. a three-dimensional closed surface such that every point on the surface is equidistant from a given point, the centreb. the solid figure bounded by this surface or the space enclosed by it. Equation: (x–a)² + (y–b)² + (z–c)² = r², where r is the radius and (a, b, c) are the coordinates of the centre; surface area: 4πr²; volume: 4πr³/32. any object having approximately this shape; globe3. (Astronomy) the night sky considered as a vaulted roof; firmament4. (Astronomy) any heavenly object such as a planet, natural satellite, or star5. (Astronomy) (in the Ptolemaic or Copernican systems of astronomy) one of a series of revolving hollow globes, arranged concentrically, on whose transparent surfaces the sun (or in the Copernican system the earth), the moon, the planets, and fixed stars were thought to be set, revolving around the earth (or in the Copernican system the sun)6. particular field of activity; environment: that's out of my sphere. 7. (Sociology) a social class or stratum of societyvb (tr) 8. to surround or encircle9. to place aloft or in the heavens[C14: from Late Latin sphēra, from Latin sphaera globe, from Greek sphaira]

sphere

(sfɪər)

n., v. sphered, spher•ing. n. 1. a. a solid geometric figure generated by the revolution of a semicircle about its diameter; a round body whose surface is at all points equidistant from the center. b. the surface of such a figure; a spherical surface. 2. any rounded, globular body. 3. a. a planet or star; heavenly body. b. celestial sphere. c. any of the transparent, concentric, spherical shells, or layers, in which, according to ancient belief, the planets, stars, and other heavenly bodies were set. 4. the environment within which a person or thing exists, acts, or operates. 5. a field of something specified: a sphere of knowledge. v.t. 6. to enclose in a sphere. 7. to form into a sphere. 8. to place among the heavenly spheres. [1275–1325; < Old French espere < Late Latin spēra, Latin sphaera globe < Greek sphaîra]

-sphere

a combining form meaning “sphere,” “something spherical in shape” (hemisphere), used esp. in the names of the concentric layers of gases, water, rock, etc., characteristic of the earth or other celestial bodies (ionosphere; lithosphere).

sphereThe volume (V) of a sphere can be calculated using the following equation: V = ⁴/₃ πr³.

sphere

(sfîr) A three-dimensional geometric surface having all of its points the same distance from a given point.

sphere

great circle - Any circle on the surface of a sphere that lies on a plane through its center, or a circle that divides into two equal parts—as the Equator.
quadrant - A quarter of a circle or sphere.
rhumb line - A line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction.
diameter - From Greek, meaning "measure through" (a circle or sphere, etc.).

Sphere

the persons with whom one is normally in contact, 1839; a group of persons of a certain rank, standing, or interest, 1601.Examples: sphere of sweet affections, 1602; of fortunes, 1671; of the theatre; of the world of music.

sphere

Past participle: sphered
Gerund: sphering

Imperative
sphere
sphere

Present
I sphere
you sphere
he/she/it spheres
we sphere
you sphere
they sphere

Preterite
I sphered
you sphered
he/she/it sphered
we sphered
you sphered
they sphered

Present Continuous
I am sphering
you are sphering
he/she/it is sphering
we are sphering
you are sphering
they are sphering

Present Perfect
I have sphered
you have sphered
he/she/it has sphered
we have sphered
you have sphered
they have sphered

Past Continuous
I was sphering
you were sphering
he/she/it was sphering
we were sphering
you were sphering
they were sphering

Past Perfect
I had sphered
you had sphered
he/she/it had sphered
we had sphered
you had sphered
they had sphered

Future
I will sphere
you will sphere
he/she/it will sphere
we will sphere
you will sphere
they will sphere

Future Perfect
I will have sphered
you will have sphered
he/she/it will have sphered
we will have sphered
you will have sphered
they will have sphered

Future Continuous
I will be sphering
you will be sphering
he/she/it will be sphering
we will be sphering
you will be sphering
they will be sphering

Present Perfect Continuous
I have been sphering
you have been sphering
he/she/it has been sphering
we have been sphering
you have been sphering
they have been sphering

Future Perfect Continuous
I will have been sphering
you will have been sphering
he/she/it will have been sphering
we will have been sphering
you will have been sphering
they will have been sphering

Past Perfect Continuous
I had been sphering
you had been sphering
he/she/it had been sphering
we had been sphering
you had been sphering
they had been sphering

Conditional
I would sphere
you would sphere
he/she/it would sphere
we would sphere
you would sphere
they would sphere

Past Conditional
I would have sphered
you would have sphered
he/she/it would have sphered
we would have sphered
you would have sphered
they would have sphered

Thesaurus

Noun	1.	sphere - 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"arena, domain, orbit, area, fieldenvironment - the totality of surrounding conditions; "he longed for the comfortable environment of his living room"distaff - the sphere of work by womenfront - a sphere of activity involving effort; "the Japanese were active last week on the diplomatic front"; "they advertise on many different fronts"kingdom, realm, land - a domain in which something is dominant; "the untroubled kingdom of reason"; "a land of make-believe"; "the rise of the realm of cotton in the south"lap - an area of control or responsibility; "the job fell right in my lap"political arena, political sphere - a sphere of intense political activitypreserve - a domain that seems to be specially reserved for someone; "medicine is no longer a male preserve"province, responsibility - the proper sphere or extent of your activities; "it was his province to take care of himself"
	2.	sphere - any spherically shaped artifactartefact, artifact - a man-made object taken as a wholeglobe - a sphere on which a map (especially of the earth) is represented
	3.	sphere - the geographical area in which one nation is very influentialsphere of influencegeographic area, geographic region, geographical area, geographical region - a demarcated area of the Earth
	4.	sphere - a particular aspect of life or activity; "he was helpless in an important sector of his life"sectoraspect, facet - a distinct feature or element in a problem; "he studied every facet of the question"department - a specialized sphere of knowledge; "baking is not my department"; "his work established a new department of literature"
	5.	sphere - a solid figure bounded by a spherical surface (including the space it encloses)round shape - a shape that is curved and without sharp anglesconglobation, conglomeration - a rounded spherical formglobe, orb, ball - an object with a spherical shape; "a ball of fire"drop, bead, pearl - a shape that is spherical and small; "he studied the shapes of low-viscosity drops"; "beads of sweat on his forehead"
	6.	sphere - a three-dimensional closed surface such that every point on the surface is equidistant from the centersteradian, sr - the unit of solid angle adopted under the Systeme International d'Unitesround shape - a shape that is curved and without sharp angles
	7.	sphere - the apparent surface of the imaginary sphere on which celestial bodies appear to be projectedcelestial sphere, empyrean, firmament, heavens, vault of heaven, welkinapex of the sun's way, solar apex, apex - the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed starscelestial point - a point in the heavens (on the celestial sphere)nadir - the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projectedsurface - the extended two-dimensional outer boundary of a three-dimensional object; "they skimmed over the surface of the water"; "a brush small enough to clean every dental surface"; "the sun has no distinct surface"zenith - the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projectedzodiac - a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes

sphere

noun1. ball, globe, orb, globule, circle The cactus will form a large sphere crested with golden thorns.2. field, range, area, department, function, territory, capacity, province, patch, scope, turf (U.S. slang), realm, domain, compass, walk of life the sphere of international politics3. rank, class, station, status, stratum life outside academic spheres of societysphere of influence area, range, scope, field, extent, orbit, jurisdiction, compass, remit the British or American spheres of influence

sphere

nounAn area within which something or someone exists, acts, or has influence or power:ambit, compass, extension, extent, orbit, purview, range, reach, realm, scope, sweep, swing.

Translations

球体

sphere

(sfiə) noun a solid object with a surface on which all points are an equal distance from the centre, like eg most types of ball. 球（体） spherical (ˈsferikəl) adjective completely round, like a ball. It is now known that the world is not flat, but spherical; a spherical object.球形的

sphere

sphere,

in geometry, the three-dimensional analogue of a circlecircle,
closed plane curve consisting of all points at a given distance from some fixed point, called the center. A circle is a conic section cut by a plane perpendicular to the axis of the cone.
..... Click the link for more information. . The term is applied to the spherical surface, every point of which is the same distance (the radius) from a certain fixed point (the center), and also to the volume enclosed by such a surface. The curve formed by a plane cutting a sphere is a circle. If the plane goes through the center of the sphere, the circle is called a great circle of the sphere. It is the largest circle that can be drawn upon the sphere, and all great circles of the same or equal spheres are of equal size. The shortest distance between two points on a spherical surface, measured on the surface, is the distance along the great circle through those points. A plane cutting a sphere in a great circle divides the sphere into two equal segments called hemispheres. The diameter of a sphere is the diameter of one of its great circles. The formula for the area of the surface of a sphere is S=4πr², and for the volume it is V= 4-3 πr³, where r is the radius of the sphere. Spherical geometry and spherical trigonometry are methods of determining magnitudes and figures on a spherical surface.

Sphere

a closed surface all points of which are equally distant from a fixed point called the center of the sphere. A line segment joining the center and any of the points of a sphere is called the radius of the sphere. The term “radius” is also applied to the length of the segment. The area of a sphere is S = 4πR², where R is the sphere’s radius.

The portion of space bounded by a sphere and containing its center is also called a sphere. The volume of such a portion of space is V = 4π/R³/3.

From the standpoint of analytic geometry, a sphere is a central quadric surface whose equation in rectangular coordinates has the form

(x – a)² + (y – b)² + (z – c)² = R²

where a, b, and c are the coordinates of the center of the sphere.

Sphere

the geometric solid generated by revolving a circle about its diameter. A sphere is the locus of points in space at a distance not greater than a specified distance R from a fixed point. The fixed point is called the center of the sphere, and R is known as the sphere’s radius. The volume of a sphere is V = 4πR³/3. The surface of a sphere is also called a sphere; its area is S = 4πR².

sphere

[sfir] (mathematics) The set of all points in a euclidean space which are a fixed common distance from some given point; in Euclidean three-dimensional space the Riemann sphere consists of all points (x,y,z) which satisfy the equation x ² + y ² + z ²=1. The set of points in a metric space whose distance from a fixed point is constant.

sphere

1. Mathsa. a three-dimensional closed surface such that every point on the surface is equidistant from a given point, the centre b. the solid figure bounded by this surface or the space enclosed by it. Equation: (x--a)² + (y--b)² + (z--c)² = r², where r is the radius and (a, b, c) are the coordinates of the centre; surface area: 4πr²; volume: 4πr³/3 2. the night sky considered as a vaulted roof; firmament 3. any heavenly object such as a planet, natural satellite, or star 4. (in the Ptolemaic or Copernican systems of astronomy) one of a series of revolving hollow globes, arranged concentrically, on whose transparent surfaces the sun (or in the Copernican system the earth), the moon, the planets, and fixed stars were thought to be set, revolving around the earth (or in the Copernican system the sun)

See sphere

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sphere

-sphere

sphere

sphere

Sphere

sphere

sphere

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sphere

sphere

sphere,

Sphere

Sphere

sphere

sphere

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sphere

sphere

SPHERe

sphere

Synonyms for sphere

noun ball

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noun field

Synonyms

noun rank

Synonyms

phrase sphere of influence

Synonyms

Synonyms for sphere

noun an area within which something or someone exists, acts, or has influence or power

Synonyms

Synonyms for sphere

noun a particular environment or walk of life

Synonyms

Related Words

noun any spherically shaped artifact

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noun the geographical area in which one nation is very influential

Synonyms

Related Words

noun a particular aspect of life or activity

Synonyms

Related Words

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

Related Words

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

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

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Related Words