Arabic /ˈærəbɪk, العَرَبِية‎, al-ʻarabiyyah [alʕaraˈbijja] : عربي ,عربى‎ ʻarabī [ˈʕarabiː] is the Classical Arabic language of the 6th century and its modern descendants excluding Maltese. Arabic is spoken in a wide arc stretching across Western Asia, North Africa, and the Horn of Africa. Arabic belongs to the Afroasiatic family.
The literary language, called Modern Standard Arabic or Literary Arabic, is the only official form of Arabic. It is used in most written documents as well as in formal spoken occasions, such as lectures and news broadcasts.
Arabic is a Central Semitic language, closely related to Aramaic, Hebrew, Ugaritic and Phoenician. Standard Arabic is distinct from and more conservative than all of the spoken varieties, and the two exist in a state known as diglossia, used side-by-side for different societal functions.
Some of the spoken varieties are mutually unintellible, both written and orally, and the varieties as a whole constitute a sociolinguistic language. This means that on purely linguistic grounds they would likely be considered to constitute more than one language, but are commonly grouped together as a single language for political or religious reasons. If considered multiple languages, it is unclear how many languages there would be, as the spoken varieties form of dialect chain with no clear boundaries. If Arabic is considered a single language, it is perhaps spoken by as many as 420 million speakers (native and non-native) in the Arab world, making it one of the six most-spoken languages in the world. If considered separate languages, the most-spoken variety would most likely be Egyptian Arabic with 89 million native speakers still greater than any other Afro-asiatic language. Arabic also is a liturgical language of 1.6 billion Muslims. It is one of six official languages of United Nations.