Firmament
WordNet

noun


(1)   The apparent surface of the imaginary sphere on which celestial bodies appear to be projected
WiktionaryText

Etymology


From from .

Noun



  1. The vault of the heavens; the sky.
    And God said, "Let there be a firmament in the midst of the waters, and let it separate the waters from the waters."
  2. Basis.
  3. The field or sphere of an interest or activity.
    the international fashion firmament
 
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