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English definition of “research”

research

noun [U]    /ˈri·sɜrtʃ, rɪˈsɜrtʃ/
a detailed study of a subject in order to discover information or achieve a new understanding of it: medical / scientific research The US government has funded some research on high-speed trains . I like doing research. research    /rɪˈsɜrtʃ, ˈri·sɜrtʃ/ verb [I/T] [T] Obviously they didn’t research it and get enough information . researcher    /rɪˈsɜr·tʃər, ˈriˌsɜr-/ noun [C]
(Definition of research noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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