ouranios

οὐράνιος [7 verses](adj sg masc nom) "Heavenly" is ouranios, which is the adjective form of heaven meaning means "heavenly," dwelling in heaven " and as a metaphor, "colossal." -- "Heavenly" is not the noun form but the adjective, "heavenly" \introduced by an article, "the heavenly" or "the heavenly one." The word translated as "heaven" was the word used by the Greeks to refer to the universe outside of the planet. See this article for more perspective on the word and how Jesus uses it.