medullary ray medullary • medullary sheath · · · Info · Definitions · Synonyms · Characters · · medullary ray · · Text Common · · Latin · · Scripts 13 · · Length 5 · · Syllables Definitions · · · (noun) a sheet of vascular tissue separating the vascular bundles. Synonyms: vascular ray, medullary ray. · · Noun Definition 1 Synonyms · · · vascular ray · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D r latin small letter r U+0072 u latin small letter u U+0075 y latin small letter y U+0079