Definitions for "Recommended daily allowance"
Based upon the available scientific evidence, quantity of a vitamin or mineral established by the Food and Nutrition Board of the National Academy of Sciences, Washington, D.C., as adequate "to meet the needs of practically all healthy persons." The RDA differs from the Minimum Daily Requirement (MDR), the minimum that must be ingested to prevent dietary deficiency.
A group of standards put forth by the National Research Council indicating the minimum amount of nutrients that should be eaten daily.
the amount of each vitamin and mineral a person needs each day to stay healthy