, Ptol. 2.16.4
; Tab. Peut.; Orelli, Inscript
. 506, 959, 963, 3924; Amm. Marc. 30.5
; Itin. Anton.), a Roman colony and a strong fortress in Pannonia, where the legion Adjutrix Secuda was in garrison (Dion. Cass. 55.24), and where also there was a large manufactory of bucklers. Acincum, being the centre of the operations on the Roman frontier against the neighbouring Iazyges (Slovács
), was occasionally the head-quarters of the emperors.
It answers to the present Alt-Buda,
where Roman basements and broken pillars of aqueducts are still visible. On the opposite bank of the Danube, and within the territory of the lazyges, stood a Roman fort or outpost called, from its relative position, Contra-Acincum (Not. Imp.), which was connected with Acincum by a bridge. Contra-Acincum is named Πέσσιον
by Ptolemy (3.7.2