RDA


Meaning of RDA in English

/ ˌaː diː ˈei; NAmE ˌarː/ abbreviation

recommended daily allowance (the amount of a chemical, for example a vitamin or a mineral, which you should have every day)

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.