ElsterPronunciation: /ˈɛlstə/Definition of Elster noun [usually as modifier] Geology a Pleistocene glaciation in northern Europe, corresponding to the Anglian of Britain (and possibly the Mindel of the Alps). the system of deposits laid down at the time of the Elster glaciation. Derivatives ElsterianPronunciation: /ɛlˈstɪərɪən/ adjective & noun Origin: 1930s: the name of a tributary of the River Elbe in GermanyElster in other Oxford dictionaries Definition of Elster in the US English dictionary