The country's official full name is "Republic of the Union of Myanmar" (, '''', ). Countries that do not officially recognise that name use the long form "Union of Burma" instead. In English, the country is popularly known as either ''Burma'' or ''Myanmar''. In Burmese, the pronunciation depends on the register used and is either '''' () or '''' (). The name ''Burma'' has been in use in English since the 18th century.