A by-product of the milling of wheat, containing approximately 20% of indigestible cellulose; a bulk cathartic, usually taken in the form of cereal or special b. products.
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bran 'bran n the edible broken seed coats of cereal grain separated from the flour or meal by sifting or bolting
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(bran) the meal derived from the epidermis or outer covering of a cereal grain. It is a source of dietary fiber, which may be soluble (e.g., oats) or insoluble (e.g., wheat) depending on the type of grain.Medical dictionary. 2011.