Definitions for "Official language"
See language, official.
a language whose status in a country has been officially recognized, that is, granted status by law. Countries with official languages have a variety of policies, but the existence of an official language usually means that all government business, from legislative acts to birth registrations, will be produced in that language; education may be another area conducted exclusively in the official language. See also NATIONAL LANGUAGE.
language(s) recognized by a country for official purposes
an essential constituent of state culture