Definition of Waldsterben in English:
 Waldsterben
noun ˈvaltˌʃtɛrbnˈvaltˌʃtɛːb(ə)n
mass nounDisease and death in forest trees in central Europe as a result of atmospheric pollution.
 the politicians of Europe were galvanized by Waldsterben unlike any environmental issue
 Example sentencesExamples
-  Back in the 80s I did several feature stories for American Forests Magazine on Waldsterben.
 -  Acid rain from fossil-fuel pollution damaged the forest that remained so much that the term Waldsterben (forest death) was coined a few decades ago.
 -  In the case of Waldsterben in central Europe, three types of symptoms typify the recent changes that have taken place in many species of trees under a wide variety of ecological conditions.
 -  The main causes of the pollution responsible for Waldsterben are industrial plants and traffic.
 -  So the debate about what causes this deficiency has become central to the wider argument about Waldsterben.
 
Origin
  
1980s: from German, from Wald 'forest' + Sterben 'death'.