GNU Collaborative International Dictionary of English

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1.       
   Zein (?), n. [Cf. F. zéine.  See Zea.] (Chem.) A nitrogenous substance of the nature of gluten, obtained from the seeds of Indian corn (Zea) as a soft, yellowish, amorphous substance.  [Formerly written zeine.]
   
   [1913 Webster]