mucous membrane mucous colitis • mucous secretion · · · Info · Definitions · Synonyms · Characters · · mucous membrane · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) mucus-secreting membrane lining all body cavities or passages that communicate with the exterior. Synonyms: mucous membrane, mucosa. · · Noun Definition 1 Synonyms · · · mucosa · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075