Adria

Adria is a town in the province of Rovigo in Italy, situated between the mouths of the rivers Adige and Po. It is an Episcopal See.

In ancient times Adria was the site of Atria (or Hatria), a town which gave its name to the Adriatic Sea. Its origin is not clear, but it was probably a Venetian (Illyrian) city, and not an Etruscan or Punic city. Already by the the second half of the 5th century B.C. the rivers had accumulated so much silt that the city was no longer at the coast, and in the Roman Empire period a canal was excavated by Philistus.

The remains of ancient Atria today lie three to four metres below the current level.

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Adria - (Acts 27:27; R.V., "the sea of Adria"), the Adriatic Sea, including in Paul's time the whole of the Mediterranean lying between Crete and Sicily.
It is the modern Gulf of Venice, the Mare Superum of the Romans, as distinguished from the Mare Inferum or Tyrrhenian Sea.

From Easton's Bible Dictionary (1897)