Icosium

Borrowed from Ancient Greek Ἰκόσιον (Ikósion), from Punic 𐤀𐤉𐤊𐤎𐤌 (ʾyksm).

• (Classical Latin) IPA^(key): [ɪˈkɔ.si.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [iˈkɔː.s̬i.um]

Icosium n sg (genitive Icosiī or Icosī); second declension

1. A city on the coast of Algeria, Roman Mauretania Caesariensis, now contained by the qaṣaba of Algiers

Second-declension noun (neuter), with locative, singular only.

¹Found in older Latin (until the Augustan Age).

• “Icosium”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• “Icosium”, in William Smith, editor (1854, 1857), A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly
• Icosium on Wikipedia.Wikipedia