vitelline circulation vitelline • vitelline sac · · · Info · Definitions · Characters · · vitelline circulation · · Text Common · · Latin · · Scripts 21 · · Length 7 · · Syllables Definitions · · · (noun) circulation of blood between the embryo and the yolk sac. Synonyms: vitelline circulation. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076