1. pertaining to the sky or visible heaven, or to the universe beyond the earth’s atmosphere, as in celestial body.
  2. pertaining to the spiritual or invisible heaven; heavenly; divine: celestial bliss.
  3. of or relating to celestial navigation: a celestial fix.
  4. (initial capital letter) of or relating to the former Chinese Empire or the Chinese people.


  1. an inhabitant of heaven.
  2. (initial capital letter) a citizen of the Celestial Empire.


  1. heavenly; divine; spiritualcelestial peace
  2. of or relating to the skycelestial bodies

late 14c., “pertaining to heaven,” from Old French celestial “celestial, heavenly, sky-blue,” from Latin caelestis “heavenly, pertaining to the sky,” from caelum “heaven, sky; abode of the gods; climate,” of uncertain origin; perhaps from PIE *kaid-slo-, perhaps from a root also found in Germanic and Baltic meaning “bright, clear” (cf. Lithuanian skaidrus “shining, clear;” Old English hador, German heiter “clear, shining, cloudless,” Old Norse heið “clear sky”).

The Latin word is the source of the usual word for “sky” in most of the Romance languages, e.g. French ciel, Spanish cielo, Italian cielo. General sense of “heavenly, very delightful” in English is from early 15c.

  1. Relating to the sky or the heavens. Stars and planets are celestial bodies.
  2. Relating to the celestial sphere or to any of the coordinate systems by which the position of an object, such as a star or planet, is represented on it.
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