noun
[ U ] ( abbr. R & D ) (in industry, etc.) work that tries to find new products and processes or to improve existing ones
noun
[ U ] ( abbr. R & D ) (in industry, etc.) work that tries to find new products and processes or to improve existing ones
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005