1) Protein in cereal grains 
Aleuron is a genus of moths in the Sphingidae family. ...
Protein granules in the endosperm of seeds, supposed to contain the vitamins of edible seeds and grains. ... Origin: G. Flour ... (05 Mar 2000) ... 
Type: Term Pronunciation: al′ū-rōn Definitions: 1. Protein granules in the endosperm of seeds, supposed to contain the vitamins of edible seeds and grains.
aleurone, aleuron A granular protein found in the endosperm of many seeds or forming the outermost layer in cereal grains. Alteration of Greek aleuron, 'wheat flour'.