Wordnet 3.0
NOUN (1)
1. 
 German chemist who was co-discoverer with Lise Meitner of nuclear fission (1879-1968); 
[syn: Hahn, Otto Hahn]
WordNet (r) 3.0 (2006):
Hahn
    n 1: German chemist who was co-discoverer with Lise Meitner of
         nuclear fission (1879-1968) [syn: Hahn, Otto Hahn]