Blue
Blue noun - The expanse of air surrounding the earth.
Celestial sphere and blue are semantically related. In some cases you can use "Celestial sphere" instead a noun "Blue".
Celestial sphere
Celestial sphere noun - The apparent surface of the imaginary sphere on which celestial bodies appear to be projected.
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Synonyms for Celestial sphere
Blue and celestial sphere are semantically related. You can use "Blue" instead a noun phrase "Celestial sphere".
Cite this Source
Celestial sphere and Blue. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/blue/celestial_sphere
Blue & Celestial sphere. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/blue/celestial_sphere>.
Celestial sphere or Blue. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/blue/celestial_sphere.
Google Ngram Viewer shows how "blue" and "celestial sphere" have occurred on timeline