Relating to heaven or the sky; heavenly or celestial.
From Latin coelestis, from coelum (sky, heaven). This is an alternate spelling of 'celestial' that preserves the older Latin form with the 'oe' diphthong.
Medieval monks and scholars wrote 'coelestial' because they were copying Latin directly from ancient texts—when spelling standards weren't fixed, different versions of the same word coexisted for centuries.
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