respiratory organ respiratory nerve • respiratory pigment · · · Info · Definitions · Characters · · respiratory organ · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) any organ involved in the process of respiration. Synonyms: respiratory organ. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E 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