Definitions
1.NounA regulated diet that excludes or constrains certain types of food, especially for health reasons; also, a book or similar setting out such regulations. .mw-parser-output .defdate{font-size:smaller}
2.NounA prescribed meal plan setting out how the inhabitants of an institution (such as a prison, hospital etc.) should be fed, and on what foods.
3.AdjectivePertaining to a prescribed diet; , relating to what a person or animal eats."If you have any dietary requirements, please inform the kitchen staff."
4.AdjectiveComprising a food source.