This article does not cite any sources. (December 2009) (Learn how and when to remove this template message)
In German linguistics, the Speyer line, or Main line (Main river) is an isogloss separating the dialects to the north, which have a geminated (lengthened) stop in words like Appel "apple", from the dialects to the south, which have an affricate: Apfel. The line begins in Alsace near Strasbourg, and runs north-east to Thüringen, crossing the Rhine at Speyer. After passing close to Erfurt, it turns south-east and continues into the formerly German-speaking parts of Bohemia. It can be observed well by the fact that place-names containing an uncombined /p/ phoneme mostly lie to the north of the line (Paderborn, Potsdam, Wuppertal), while those with an affricate /pf/ (Pfaffenhofen, Pforzheim) mostly lie to the south.
|This Indo-European languages-related article is a stub. You can help Wikipedia by expanding it.|