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research

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verb [transitive] research pronunciation in British English /rɪˈsɜː(r)tʃ/ research pronunciation in British English /ˈriːsɜː(r)tʃ/ 
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present tense
I/you/we/theyresearch
he/she/itresearches
present participleresearching
past tenseresearched
past participleresearched
  1. 1
    to make a detailed study of something in order to discover new facts

    They have been researching the effects of the drug on mice.

    The subject has not been fully researched before.

  2. 2
    to find information about a subject for a book, film, television programme etc

    The documentary was rigorously researched and intelligently presented.

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