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Smith's Bible Dictionary
Ac'cho. (The Ptolemais of the Maccabees and New Testament), now called Acca, or more usually by Europeans, St. Jean d'Arc, the most important seaport town on the Syrian coast, about 30 miles south of Tyre. It was situated on a slightly projecting headland, at the northern extremity of that spacious bay which is formed by the bold promontory of Carmel on the opposite side. Later, it was named Ptolemais, after one of the Ptolemies, probably Soter. The only notice of it in the New Testament is in Acts 21:7 where it is called Ptolemais.
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Smith, William, Dr. Entry for 'Accho'. Smith's Bible Dictionary. https://www.studylight.org/dictionaries/eng/sbd/a/accho.html. 1901.