embryonic membrane embryonic cell • embryonic stem-cell research · · · Info · Definitions · Synonyms · Characters · · embryonic membrane · · Text Common · · Latin · · Scripts 18 · · Length 6 · · Syllables Definitions · · · (noun) the inner membrane of embryos in higher vertebrates (especially when covering the head at birth). Synonyms: caul, veil, embryonic membrane. · · Noun Definition 1 Synonyms · · · caul · · Synonym 1 veil · · Synonym 2 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 i latin small letter i U+0069 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 y latin small letter y U+0079