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sphere  (sfĭr)
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. The extent of a person's knowledge, interests, or social position.
7. An area of power, control, or influence; domain. See Synonyms at field.
tr.v. sphered, spher·ing, spheres
1. To form into a sphere.
2. To put in or within a sphere.
3. To surround or encompass.

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

sphe·ric′i·ty (sfî-rĭs′ĭ-tē) n.

sphere (sfɪə)
1. (Mathematics) maths
a. 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. any object having approximately this shape; globe
3. (Astronomy) the night sky considered as a vaulted roof; firmament
4. (Astronomy) any heavenly object such as a planet, natural satellite, or star
5. (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 society
vb (tr)
8. to surround or encircle
9. 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.
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.
a. a planet or star; heavenly body.
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.
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]
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).

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

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.

  • 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.).
  • Thesaurus Legend:  Synonyms Related Words Antonyms
    Noun1.sphere - a particular environment or walk of lifesphere - 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"
    environment - the totality of surrounding conditions; "he longed for the comfortable environment of his living room"
    distaff - the sphere of work by women
    front - 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 activity
    preserve - 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 artifact
    artefact, artifact - a man-made object taken as a whole
    globe - a sphere on which a map (especially of the earth) is represented
    3.sphere - the geographical area in which one nation is very influential
    4.sphere - a particular aspect of life or activity; "he was helpless in an important sector of his life"
    aspect, 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 angles
    conglobation, conglomeration - a rounded spherical form
    globe, 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 center
    steradian, sr - the unit of solid angle adopted under the Systeme International d'Unites
    round 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 projectedsphere - the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
    apex 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 stars
    celestial 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 projected
    surface - 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 projected
    zodiac - a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes

    1. 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 politics
    3. rank, class, station, status, stratum life outside academic spheres of society
    sphere of influence area, range, scope, field, extent, orbit, jurisdiction, compass, remit the British or American spheres of influence
    sphere [sfɪəʳ] N
    1. (Astron, Math etc) → esfera f
    2. (fig) → esfera f
    in the social sphereen la esfera social
    sphere of influenceesfera f de influencia
    sphere of activitycampo m de actividad, esfera f de actividad
    his sphere of interestel ámbito de sus intereses
    in the sphere of politicsen el mundo de la política
    that's outside my sphereeso no es de mi competencia

    sphere [ˈsfɪər] n
    (= round object) → sphère f
    [activity] → domaine m
    sphere of interest → centre m d'intérêt
    sphere of influence → sphère f d'influence
    [society] → milieu m
    the influential people in her sphere → les personnes influentes de son milieu

    Kugel f; (= heavenly sphere)Gestirn nt (geh); (old Astron) → Sphäre f (old); the celestial sphere (poet)das Himmelszelt (poet); to be a spherekugelförmig sein
    (fig)Sphäre f, → Welt f; (of person, personal experience)Bereich m; (of knowledge etc)Gebiet nt, → Feld nt; (= social etc circle)Kreis m; in the sphere of politicsin der Welt der Politik; his sphere of interest/influencesein Interessen-/Einflussbereich; sphere of activity (= job, specialism)Wirkungskreis m; that’s outside my spheredas geht über meinen Horizont; (= not my responsibility)das ist nicht mein Gebiet

    sphere [sfɪəʳ] n (gen) → sfera
    his sphere of interest → la sua sfera d'interessi
    his sphere of activity → il suo campo di attività
    within a limited sphere → in un ambito molto ristretto
    sphere of influence → sfera d'influenza
    that's outside my sphere → non rientra nelle mie competenze

    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.
    spherical (ˈsferikəl) adjective
    completely round, like a ball. It is now known that the world is not flat, but spherical; a spherical object.
    n.  esfera.
    1.   estructura en forma de globo;
    2.   ambiente sociológico.

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That the red sphere had been dug out as a precious thing, was patent.
Personally, he now inclines to the opinion of the Sphere that the Straight Lines are in many important respects superior to the Circles.
In his humble sphere he was esteemed an honest man, although like many of his class in English towns he was somewhat addicted to drink.
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