What is "digraphia"

n. The concurrent use of two scripts for the same spoken language

In sociolinguistics, digraphia refers to the use of more than one writing system for the same language. Synchronic digraphia is the coexistence of two or more writing systems for the same language, while diachronic (or sequential) digraphia is the replacement of one writing system by another for a particular language.

An example of synchronic digraphia is Serbian, which is equally written in both Serbian Cyrillic alphabet and Gaj's Latin alphabet, and practically all speakers of Serbian can read and write both scripts. Another example is Punjabi which uses two different writing systems: Gurmukhi script, used in Punjab in India, and Shahmukhi (an Arabic script), though there is no difference when both of these scripts are read or pronounced. Konkani language is written in Devnagari, Kannada and Roman scripts.

An example of diachronic digraphia is Turkish, which replaced a Perso-Arabic writing system with a Latin-based system in 1928.

Digraphia has implications in language planning, language policy, and language ideology.