1. 
   thanatism
   thanatism The belief or doctrine that at death the human soul ceases to exist.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2669/2
   
   
2. 
   Thanatism
   A term employed by Ernst Haeckel (1834-1919) to express his doctrine of the mortality of annihilation of the human soul, the contrary of athanatism, immortality. -- J.J.R.
   Found op http://www.ditext.com/runes/t.html
   
   

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