recommended daily allowance

rec·om·mend·ed dai·ly al·low·ance

noun, often capitalized R&D&A
\ˌrek-ə-ˌmend-əd-ˌdā-lē-ə-ˈlau̇-ən(t)s\

Definition of RECOMMENDED DAILY ALLOWANCE

: the amount of a nutriment (as a vitamin or mineral) that is recommended for daily consumption by the Food and Nutrition Board of the National Academy of Sciences—abbreviation RDA