On the etymology of the hydronym Sestra
Alexander Akulov
In early recordings the river Sestra, which flows into Sestroretskii Razliv, is mentioned in the form of Sestreya which originated from Finnish Siestar-oja. This hydronym has neither Balto-Finnic nor Slavic etymology. The Sestra is a relatively large river on the Karelian Isthmus, and at least 9 Neolithic sites were discovered near its mouth. The main summer activity of the Neolithic people who lived in the region was fishing, and those people definitely could consider the mouth zone of Sestra as a good location for fishing. Those people spoke a language that was a relative of the Yeniseian family: sies of siestar correlates with Yeniseian ses “river”, tar correlates with Ket tɯl and Yugh tar “lower reaches of the river”. Thus, sies-tar/ses-tar means “lower reaches of the river”, this name refers not to the whole river, but to the part that was most important for the Neolithic people.
Keywords: Karelian Isthmus; Sestra river; hydronymy; etymology; Neolithic period; Paja Ul Deˀŋ