The Arabic alphabet, or Arabic abjad, is the Arabic script as specifically codified for writing the Arabic language. It is written from right-to-left in a cursive style, and includes 28 letters, of which most have contextual letterforms. The Arabic alphabet is considered an abjad, with only consonants required to be written; due to its optional use of diacritics to notate vowels, it is considered an impure abjad.
Musnad script as is clear from one of the Sabaean inscriptions.
Arabic is a Central Semitic language of the Afroasiatic language family spoken primarily in the Arab world. The ISO assigns language codes to 32 varieties of Arabic, including its standard form of Literary Arabic, known as Modern Standard Arabic, which is derived from Classical Arabic. This distinction exists primarily among Western linguists; Arabic speakers themselves generally do not distinguish between Modern Standard Arabic and Classical Arabic, but rather refer to both as al-ʿarabiyyatu l-fuṣḥā or simply al-fuṣḥā (اَلْفُصْحَىٰ).
Safaitic inscription
The Namara inscription, a sample of Nabataean script, considered a direct precursor of Arabic script.
Arabic from the Quran in the old Hijazi dialect (Hijazi script, 7th century AD)
The Qur'an has served and continues to serve as a fundamental reference for Arabic. (Maghrebi Kufic script, Blue Qur'an, 9th–10th century)