Definitions
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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 -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.
Translations: 
  • Dutch: sfeer(nl, omgeving, m}}, bereik(nl)n, t+, nl)m
  • French: sphère(fr)f
  • German: Sphí¤re , Bereich
  • Italian: sfera(it)f
  • Spanish: esfera(es)f
Etymology: From spere, from espere, from sphaera, ball, globe, celestial sphere, from (IPAchar, á), "ball", "globe", of unknown origin


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