Secoanus
Σηκοανός
Secoanus (Σηκοανός, Steph. s. v.), a river of the Massaliots, according to one reading, but according to another reading, a city of the Massaliots, from which comes the ethnic name Sequani, as Artemidorus says in his first book.
Nothing can be made of this fragment further than this; the name Sequanus belonged both to the basin of the Rhone and of the Seine.
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.