dura mater duplicity theory • durango root · · · Info · Definitions · Synonyms · Characters · · dura mater · · Text Common · · Latin · · Scripts 10 · · Length Definitions · · · (noun) the outermost (and toughest) of the 3 meninges. Synonyms: dura. · · Noun Definition 1 Synonyms · · · dura · · 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 m latin small letter m U+006D r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075