Definitions for "Dietary"
A rule of diet; a fixed allowance of food, as in workhouse, prison, etc.
a regulated daily food allowance
The fixed (and often basic and monotonous) diet prescribed for workhouse inmates. The dietary specified the food to be served to each class of inmate (male/female, adult/children etc.) for each meal of the week, often including the exact amount to be provided. After 1834, the Poor Law Commissioners devised a set of six slightly different standard dietaries from which each union could select the one it preferred, based on the local availability of various foodstuffs. The "No. 3" diet is shown below.
Keywords:  pertaining, rules
Pertaining to diet, or to the rules of diet.
Keywords:  restrictions, relating
of or relating to the diet; "dietary restrictions"