roman arch roman alphabet • roman architecture · · · Info · Definitions · Characters · · roman arch · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a round arch drawn from a single center. Synonyms: Roman arch, semicircular arch. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 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