mrna mrjn • mrs · · · Info · Definitions · Synonyms · Characters · · mrna · · Text Latin · · Script 4 · · Length 1 · · Syllables Definitions · · · (noun) the template for protein synthesis; the form of RNA that carries information from DNA in the nucleus to the ribosome sites of protein synthesis in the cell. Synonyms: messenger RNA, mRNA, template RNA, informational RNA. · · Noun Definition 1 Synonyms · · · messenger rna · · Synonym 1 template rna · · Synonym 2 informational rna · · Synonym 3 Characters · · a latin small letter a U+0061 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072