GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Juglone (?), n. [L. juglans the walnut + -one.] (Chem.) A yellow crystalline substance (C10H6O3) resembling quinone, extracted from green shucks of the walnut (Juglans regia); -- called also nucin.  Chemically, it is 5-hydroxy-1,4-naphthalenedione.
   
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2.       
   Nucin (?), n. [L. nux, nucis, a nut.] (Chem.) See Juglone.
   
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