cosmic dust cosmic background radiation • cosmic microwave background · · · Info · Definitions · Characters · · cosmic dust · · Text Common · · Latin · · Scripts 11 · · Length 4 · · Syllables Definitions · · · (noun) clouds of particles or gases occurring throughout interstellar space. Synonyms: cosmic dust. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 d latin small letter d U+0064 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075