The Arabic alphabet is now considered an impure abjad.
==== Abjad ====The abjad order is not a simple historical continuation of the earlier north Semitic alphabetic order, since it has a position corresponding to the Aramaic letter samekh/semkat , yet no letter of the Arabic alphabet historically derives from that letter
Arabic currently uses a diacritic sign, , called hamzah, to denote the glottal stop [], written alone or with a carrier:alone: with a carrier:   (above or under an alif),  (above a ww),  (above a dotless y or y hamzah)

