klein Meaning, Definition & Usage

1. noun German mathematician who created the Klein bottle (1849-1925)
   Felix Klein.
   
2. noun United States psychoanalyst (born in Austria) who was the first to specialize in the psychoanalysis of small children (1882-1960)
   Melanie Klein.
   
3. noun United States fashion designer noted for understated fashions (born in 1942)
   Calvin Klein; Calvin Richard Klein.
   

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