Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun celestial_sphere

1 sense of celestial sphere

Sense 1
celestial sphere, sphere, empyrean, firmament, heavens, vault of heaven, welkin -- (the apparent surface of the imaginary sphere on which celestial bodies appear to be projected)
       => surface -- (the extended two-dimensional outer boundary of a three-dimensional object; "they skimmed over the surface of the water"; "a brush small enough to clean every dental surface"; "the sun has no distinct surface")