a city in SW Germany, in NW Baden-Württemberg on the River Neckar: capital of the Palatinate from the 13th century until 1719; famous castle (begun in the 12th century) and university (1386), the oldest in Germany. Pop: 142 959 (2003 est)
Heidelberg in American English
(ˈhaɪdəlˌbɜrg; German ˈhaɪdəlˌbɛʀx)
city in SW Germany, in the state of Baden-Württemberg: site of a famous university (founded 1386): pop. 140,000