Complete Definition of "sphere"

see|sphère
English

Etymology
From ME. spere, from OF. espere, from L. sphaera, ball, globe, celestial sphere, from Gr. IPAchar|σφαῖρα, "ball", "globe", of unknown origin

Pronunciation
(RP): IPAchar|/sfɪə/, /<tt>[email protected]</tt>/
(US): sfîr, IPAchar|/sfɪr/, /sfIr/
audio|en-us-sphere.ogg|Audio (US)

Rhymes: Rhymes:English:-ɪə(r)|-ɪə(r)

Noun
wikipedia
en-noun

  1. Any three-dimensional object in which every cross-section is a circle.
  2. The region in which something or someone is active.
  3. 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.
  4. astronomy The apparent surface of the heavens.
  5. astronomy Anything visible on the apparent surface of the heavens.

Synonyms
(object): ball, globe, orb
(region of activity): area, domain, field, orbit, sector
(in geometry): 3-sphere (geometry), 2-sphere (topology)
(astronomy: apparent surface of the heavens): See celestial sphere
(astronomy: anything visible on the apparent surface of the heavens): See celestial body

Derived terms
blogosphere
sphere of influence

Related terms
atmosphere
hemisphere
ionosphere
planisphere
spherical
spheroid
stratosphere
troposphere

Translations
trans-top|object
Croatian: t-|hr|kugla|f
Czech: t+|cs|koule|f
Dutch: t+|nl|bol|m
French: t+|fr|sphère|f, t+|fr|boule|f
German: t+|de|Kugel
Greek: t+|el|σφαίρα|f|trsfaíra|scGrek
Hebrew: he-translation|כדור|kadúr m, he-translation|ספרה|sféra f
Italian: t-|it|sfera|f
Japanese: 球 (kyū), 球体 (kyūtai)
Latvian: sfēra f, lode f
trans-mid
Polish: t+|pl|sfera|f
Portuguese: t+|pt|esfera|f
Russian: шар (šar) m, сфера (sf'éra) f
Slovene: krogla f
Spanish: t+|es|esfera|f, t+|es|bola|f
Swedish: t+|sv|klot|c, t-|sv|glob|c, t+|sv|sfär|c
Telugu: గోళము (gOLamu)
trans-bottom

trans-top|in geometry
Croatian: t-|hr|sfera|f
Czech: t-|cs|kulová plocha|f
Dutch: t+|nl|bol|m
French: t+|fr|sphère|f
German: t+|de|Kugel|f
Hebrew: he-translation|כדור|kadúr m, he-translation|ספרה|sféra f
Italian: t-|it|sfera|f
Japanese: 球 (kyū), 球体 (kyūtai)
Polish: t+|pl|sfera|f
trans-mid
Portuguese: t+|pt|esfera|f
Russian: шар (šar) m, сфера (sf'éra) f
Slovene: krogla f
Spanish: t+|es|esfera|f
Swedish: t+|sv|sfär|c
Telugu: గోళము (gOLamu)
trans-bottom

trans-top|region of activity
Croatian: t-|hr|sfera|f
Dutch: t+|nl|omgeving|m, t-|nl|bereik|n, t+|nl|sfeer|m
French: t+|fr|sphère|f
German: Sphäre f, Bereich m
Hebrew: he-translation|תחום|tkhúm m
Hungarian: t-|hu|hatáskör
Japanese: 分野 (bun'ya), 範囲 (han'i), 領域 (ryōiki)
Latvian: sfēra f
Polish: t+|pl|obszar|m, t+|pl|sfera|f
trans-mid
Portuguese: t+|pt|esfera|f
Russian: сфера (sféra) f
Slovene: t-|sl|sfera|f
Spanish: t+|es|esfera|f
Swedish: t+|sv|fack|n, t-|sv|fält|n, t-|sv|gebit|n, t-|sv|klass|c, t-|sv|krets|c, t-|sv|område|n, t+|sv|sfär|c
trans-bottom

astronomy: apparent surface of the heavens
astronomy: anything visible on the apparent surface of the heavens

Translations to be checked
<!--Remove this section once all of the translations below have been moved into the tables above.-->
checktrans

ttbc|Chinese: (1): 球體, 球体 (qiútǐ)
ttbc|Hungarian: (1):
ttbc|Irish: sféir

mid
ttbc|Latin: (1): sphaera f
ttbc|Romanian: (1): sferă f
ttbc|Slovak: (1): guľa f

See also
ball (in topology)
Mathworld article on the sphere
PlanetMath:186|PlanetMath? article on the sphere

Category:Geometry
Category:Shapes

el:sphere
fr:sphere
io:sphere
id:sphere
ja:sphere
ru:sphere
simple:sphere
fi:sphere
sv:sphere
ta:sphere
te:sphere
vi:sphere
zh:sphere

Revision and Credits for"sphere"
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