cosmicadjective/kɔʒˈmiku/mediumcós·mi·coPortuguesEnglishEspanolFrancaisDefinitionRelating to the cosmos, to the universe as a whole.Scientists study the cosmic microwave background radiation.He felt a sense of insignificance before the cosmic vastness.syncosmicuniversalsiderealEtymologyDo grego 'kosmikós', de 'kósmos' (universo, ordem).Related wordscosmoscosmologiacosmonautamacrocosmomicrocosmo