An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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research and development
  پژوهش و گوالش  
pažuheš o govâleš
Fr.: recherche et développement  

Systematic activity combining both basic and applied research, and aimed at discovering solutions to problems or creating new goods and knowledge. (BusinessDictionary.com).

See also: → research; → development.