Therma or Thermē (, ) was a Greek city founded by Eretrians or Corinthians in late 7th century BC in ancient Mygdonia (which was later incorporated into Macedon), situated at the northeastern extremity of a great gulf of the Aegean Sea, the Thermaic Gulf. The city was built amidst mosquito-infested swampland, and its name derives from the Greek thérmē/thérma, "(malarial) fever". Therma was later renamed Thessalonica by Cassander. By that time the port of the previous capital of Macedonia, Pella, had begun silting up, so Cassander took advantage of the deep-water port to the northwest of Therma to expand the settlement. The site of Therma is tentatively located 3 miles (5 km) south of modern Thessaloniki around the suburb of modern Thermi. See also List of ancient Greek cities References Herodotus, the Seventh, Eighth, & Ninth Books, with Introduction Reginald Walter Macan The Letters to the Thessalonians by Gene L. Green From Mycenae to Constantinople: The Evolution of the Ancient City By Richard Allan Tomlinson Hidryma Meletōn Chersonēsou tou Haimou (Thessalonikē, Greece) External links Ancient coinage from Therma Cities in ancient Macedonia Greek colonies in Mygdonia Ancient Thessalonica Populated places established in the 7th century BC Former populated places in Greece Populated places in ancient Macedonia Eretrian colonies Corinthian colonies