Meaning of RESEARCH in English

[noun] [U] - a detailed study of a subject, esp. in order to discover (new) information or reach a (new) understandingscientific/medical/historical/linguistic researcha research student/assistanta research laboratoryThey are doing/carrying out/conducting/pursuing some fascinating research into/on the language of dolphins.The research and development ( R and D) department investigated ways of improving engine performance.

Cambridge English vocab.      Кембриджский английский словарь.