Appianus

• (Classical Latin) IPA^(key): [ap.piˈaː.nʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [ap.piˈaː.nus]

From Appius (“Appian”) +‎ -ānus (“of or pertaining to”, adjective-forming suffix).

Appiānus (feminine Appiāna, neuter Appiānum); first/second-declension adjective

1. Of or pertaining to Appius
2. (especially) Of or pertaining to Appius Claudius Caecus (ca. 340 BCE–273 BCE), an Ancient Roman politician who built the Appian Way.

First/second-declension adjective.

• Appianus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.

From Ancient Greek Ἀππιανός (Appianós)

Appiānus m (genitive Appiānī); second declension

1. A Roman male given name from Ancient Greek, notably borne by Appian of Alexandria (c. 95 – c. 165), a Roman historian of Greek descent

Second-declension noun.

• “Appianus”, in Harry Thurston Peck, editor (1898), Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers