BrE /rɪˈsɜːtʃ/ ; NAmE /rɪˈsɜːrtʃ/ ; BrE /ˈriːsɜːtʃ/ ; NAmE /ˈriːsɜːrtʃ/ [uncountable] (also researches [plural] especially in British English) a careful study of a subject, especially in order to discover new facts or information about it medical/historical/scientific, etc. research to do/conduct/undertake research research (into/on something/somebody) He has carried out extensive research into renewable energy sources. Recent research on deaf children has produced some interesting findings about their speech. What have their researches shown? a research project/grant/student Research on animals has led to some important medical advances. I've done some research to find out the cheapest way of travelling there.