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  <page>
    <title>sphere</title>
    <id>28239</id>
    <revision>
      <id>6999691</id>
      <timestamp>2009-07-18T09:53:43Z</timestamp>
      <contributor>
        <username>Tbot</username>
        <id>44393</id>
      </contributor>
      <minor/>
      <comment>updated t/t-/t+ templates</comment>
      <text xml:space="preserve">{{also|sphère}}
==English==
{{wikipedia}}

===Etymology===
From {{etyl|fro}} {{term|espere}}, from late {{etyl|la}} {{term|sphera|sphēra}}, earlier {{term|sphaera||ball, globe, celestial sphere}}, from {{etyl|grc}} {{term|σφαῖρα||ball, globe|sc=polytonic}}, of unknown origin.

===Pronunciation===
* {{a|UK}} {{IPA|/sfɪə/}}, {{SAMPA|/sfI@/}}
* {{a|US}} {{enPR|sfîr}}, {{IPA|/sfɪr/}}, {{SAMPA|/sfIr/}}
* {{audio|en-us-sphere.ogg|Audio (US)}}

* {{rhymes|ɪə(r)}}

===Noun===
{{en-noun}}

# {{geometry}}A regular three-dimensional object in which every [[cross-section]] is a [[circle]]; the figure described by the revolution of a semi-circle about its diameter.
# {{mathematics}} 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.
# A spherical object; a [[globe]] or [[ball]].
# The apparent outer limit of space, the edge of the heavens, imagined as a hollow globe within which celestial bodies appear to be embedded.
# {{historical|astronomy}} 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]]'').
#* '''1603''', John Florio, translating Michel de Montaigne, ''Essays'', vol. 1 p. 153:
#*: It is more simplicitie to teach our children [...] [t]he knowledge of the starres, and the motion of the eighth '''spheare''', before their owne.
# {{figuratively}} An area of activity for a planet; or by extension, an area of influence for a [[god]], [[hero]] etc.
# The region in which something or someone is active; one's [[province]], [[domain]].

====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]]&lt;!--add more like this, please--&gt;

====Translations====
{{trans-top|spherical object}}
* {{trreq|Albanian}}
* Arabic: {{Arab|[[جِسْمٌ كُرَوِيّ|جسم كروي]]}} (jísmu kuráwiy) {{m}}
* Armenian: [[գունդ]] (gund)
* {{trreq|Basque}}
* Chinese: [[球]] (qiú), [[圆球]] (yuán qiú)
* Croatian: {{t-|hr|kugla|f}}
* Czech: {{t+|cs|koule|f}}
* Danish: [[kugle]]
* Dutch: {{t+|nl|bol|m}}
* Esperanto: {{t|eo|sfero|xs=Esperanto}}
* Estonian: {{t-|et|kera}}
* Finnish: {{t+|fi|pallo}}
* French: {{t+|fr|sphère|f}}, {{t+|fr|boule|f}}
* Georgian: [[სფერო]] (sp‘ero)
* German: {{t+|de|Kugel|f}}
* Greek: {{t+|el|σφαίρα|f|tr=sfaíra|sc=Grek}}
* Hebrew: {{he-translation|כדור|kadúr}} {{m}}, {{he-translation|ספרה|sféra}} {{f}}
* {{trreq|Hindi}}
* Hungarian: {{t+|hu|gömb}}
* Icelandic: {{t+|is|hnöttur}}
* Irish: [[sféar]] {{m}}
* Italian: {{t+|it|sfera|f}}
{{trans-mid}}
* Japanese: [[球]] (kyū), [[球体]] (kyūtai)
* Korean: [[구체]] (guche)
* Latvian: [[sfēra]] {{f}}, [[lode]] {{f}}
* Lithuanian: [[rutulys]]
* {{trreq|Maltese}}
* {{trreq|Mongolian}}
* Persian: {{t+|fa|کره|sc=fa-Arab|xs=Persian}}
* Polish: {{t+|pl|sfera|f}}
* Portuguese: {{t+|pt|esfera|f}}
* Romanian: [[sferă]] {{f}}
* Russian: [[шар]] (šar) {{m}}, [[сфера]] (sféra) {{f}}
* Slovak: [[gul'a]] {{f}}
* Slovene: {{t+|sl|krogla|f}}
* Spanish: {{t+|es|esfera|f}}, {{t+|es|bola|f}}
* Swahili: {{t|sw|mviringo|xs=Swahili}}
* Swedish: {{t+|sv|klot|c}}, {{t-|sv|glob|c}}, {{t+|sv|sfär|c}}
* [[Telugu]]: [[గోళము]] (gOLamu)
* Thai: {{Thai|[[ทรงกลม]]}} (song glom)
* Turkish: {{t+|tr|küre}}
* {{trreq|Vietnamese}}
* {{trreq|Welsh}}
{{trans-bottom}}

{{trans-top|geometrical figure}}
* Armenian: [[գունդ]] (gund)
* Croatian: {{t-|hr|sfera|f}}
* Czech: {{t-|cs|kulová plocha|f}}
* Dutch: {{t+|nl|bol|m}}
* Esperanto: {{t|eo|sfero|xs=Esperanto}}
* French: {{t+|fr|sphère|f}}
* Georgian: [[სფერო]] (sp‘ero)
* German: {{t+|de|Kugel|f}}
* Hebrew: {{he-translation|כדור|kadúr}} {{m}}, {{he-translation|ספרה|sféra}} {{f}}
* Irish: [[sféar]] {{m}}
{{trans-mid}}
* Italian: {{t+|it|sfera|f}}
* Japanese: [[球]] (kyū), [[球体]] (kyūtai)
* Polish: {{t+|pl|sfera|f}},  {{t+|pl|kula|f}}
* Portuguese: {{t+|pt|esfera|f}}
* Russian: [[шар]] (šar) {{m}}, [[сфера]] (sf'éra) {{f}}
* Slovene: {{t+|sl|krogla|f}}
* Spanish: {{t+|es|esfera|f}}
* Swedish: {{t+|sv|sfär|c}}
* [[Telugu]]: [[గోళము]] (gOLamu)
{{trans-bottom}}

{{trans-top|region of activity}}
* Armenian: [[ասպարեզ]] (asparez)
* Croatian: {{t-|hr|sfera|f}}
* Dutch: {{t+|nl|omgeving|f}}, {{t+|nl|bereik|n}}, {{t+|nl|sfeer|m}}
* Esperanto: {{t|eo|sfero|xs=Esperanto}}
* French: {{t+|fr|sphère|f}}
* German: {{t+|de|Sphäre|f}}, {{t+|de|Bereich|m}}
* Hebrew: {{he-translation|תחום|tkhúm}} {{m}}
* Hungarian: {{t+|hu|hatáskör}}, {{t+|hu|kör}}, {{t+|hu|terület}}
* Irish: [[réimse]] {{m}}
* Japanese: [[分野]] (bun’ya), [[範囲]] (han'i), [[領域]] (ryōiki)
{{trans-mid}}
* Latvian: [[sfēra]] {{f}}
* Polish: {{t+|pl|obszar|m}}, {{t+|pl|sfera|f}}
* 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}}
* Turkish: {{t+|tr|alan}}
{{trans-bottom}}

{{trans-see|astronomy: apparent surface of the heavens|celestial sphere}}
&lt;!--Remove this section once all of the translations below have been moved into the tables above.--&gt;
{{checktrans-top}}
* {{ttbc|Chinese}}: (1): [[球體]], [[球体]] (qiútǐ)
* {{ttbc|Latin}}: (1): [[sphaera]] {{f}}
{{checktrans-bottom}}

===See also===
* [[ball]] (''in topology'')
* [http://mathworld.wolfram.com/Sphere.html Mathworld article on the sphere]
* [[PlanetMath:186|PlanetMath article on the sphere]]

[[Category:Geometry]]
[[Category:Shapes]]

[[et:sphere]]
[[el:sphere]]
[[fr:sphere]]
[[io:sphere]]
[[id:sphere]]
[[sw:sphere]]
[[hu:sphere]]
[[ja:sphere]]
[[pl:sphere]]
[[ru:sphere]]
[[simple:sphere]]
[[fi:sphere]]
[[sv:sphere]]
[[ta:sphere]]
[[te:sphere]]
[[vi:sphere]]
[[zh:sphere]]</text>
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