1. research and development; R&D
Wikipedia definition
2. Research and developmentThe phrase research and development (also known as R and D or R&D), according to the OECD, refers to "creative work undertaken on a systematic basis in order to increase the stock of knowledge, including knowledge of man, culture and society, and the use of this stock of knowledge to devise new applications". Research and development is often scientific or toward the development of particular technologies and is frequently carried out as corporate or governmental activity.
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