research
US /ˈriː.sɝːtʃ/
UK /ˈriː.sɝːtʃ/

1.
the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions
:
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She is conducting research on climate change.
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The company invests heavily in scientific research.
1.
to investigate systematically
:
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You should research the topic thoroughly before writing your essay.
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The team is researching new ways to generate clean energy.