noun ko·ji \ˈkōjē\

Definition of koji



  1. 1 :  a yeast or other starter prepared in Japan from rice inoculated with the spores of a mold (Aspergillus oryzae) and permitted to develop a mycelium

  2. 2 :  an enzyme preparation from koji that is similar to diastase from malt

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Origin and Etymology of koji

Japanese kōji

Seen and Heard

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to criticize severely

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