respiratory system respiratory syncytial virus • respiratory tract · · · Info · Definitions · Synonyms · Characters · · respiratory system · · Text Common · · Latin · · Scripts 18 · · Length 7 · · Syllables Definitions · · · (noun) the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing. Synonyms: respiratory system, systema respiratorium. · · Noun Definition 1 Synonyms · · · systema respiratorium · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079