cosmic Syllabification: (cos·mic)Pronunciation: /ˈkäzmik/Translate cosmic | into German | into Italian | into Spanish Definition of cosmic adjective of or relating to the universe or cosmos, especially as distinct from the earth:cosmic matter inconceivably vast:the song is a masterpiece of cosmic proportionsDerivatives cosmical adjective cosmicallyPronunciation: /-(ə)lē/ adverb cosmic in other Oxford dictionaries Definition of cosmic in the British & World English dictionary