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Early Modern French rechercher (to examine closely), from Old French recerchier (to seek, to look for),  from Old French cerchier (To search; to seek; to look for.) and Old French re- (again; once more), from Late Latin circāre, present active infinitive of circō, from Latin circacircus, from circus (circle) +‎ -ō, from  Ancient Greek κίρκος (kírkoscircle, ring).


  • (Received Pronunciation) IPA(key)/ɹɪˈsɜːtʃ//ˈɹiː.sɜːtʃ/
  • (General American) IPA(key)/ˈɹi.sɚtʃ//ɹiˈsɝtʃ/


research (countable and uncountableplural researches)

  1. (uncountable, countable in some dialects) Diligent inquiry or examination to seek or revise facts, principles, theories, applications, etc.; laborious or continued search after truth.
    The research station that houses Wang and his team is outside Lijiang, a city of about 1.2 million people.

  2. (countable, dated) A particular instance or piece of research.


research (third-person singular simple present researchespresent participle researchingsimple past and past participle researched)

  1. (transitive) To search or examine with continued care; to seek diligently.
  2. (intransitive) To make an extensive investigation into.
  3. (transitive) To search again.
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