pasigraphy
/pəˈsɪɡrəfi/noun
A system of writing intended to be intelligible to speakers of any language (like the numerals 1, 2, 3, etc.), with characters or numbers rather than words used to represent ideas. Also in extended use: any universal language.
Origin
Late 18th century; earliest use found in The Monthly Review. From ancient Greek πᾶσι for all, dative plural of πᾶς all + -graphy, after French pasigraphie.