celestial Look up celestial at Dictionary.com
late 14c., from L. cælestis "heavenly," from cælum "heaven, sky," of uncertain origin; perhaps from PIE *kaid-slo-, from a root meaning "bright." The L. word is the source of the usual word for "sky" in most of the Romance languages, e.g. French ciel, Sp. cielo, It. cielo.