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sphere noun

  /sfɪə(ɹ)/ , /sfɪɚ/
  • An object which appears to be bounded by a sphere; a round object, a ball. [from 14th c.]
  • (figuratively) The region in which something or someone is active; one's province, domain. [from 17th c.]
  • (logic, dated) The domain of reference of a proposition, subject, or predicate, or the totality of the particular subjects to which it applies.
 sfera

-sphere suffix

  • Designating a global system or layer of the Earth or another planet.
 -sfera
armillary sphere
sfera armillare
celestial sphere
sfera celeste
sphere of influence
sfera di influenza
Riemann sphere
sfera di Riemann
photon sphere
sfera di fotoni, sfera fotonica
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