firmament
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected • Syn: celestial sphere, sphere, empyrean, heavens, vault of heaven, welkin • Derivationally related forms: firmamental, empyreal (for: empyrean) • Hypernyms: surface • Part Meronyms: apex, solar apex, apex of the sun's way, celestial point, nadir, zenith, zodiac
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