hyper- +‎ extend


hyperextend ‎(third-person singular simple present hyperextends, present participle hyperextending, simple past and past participle hyperextended)

  1. (medicine) To extend a joint beyond its normal position in a way that stresses the ligaments, often causing injury
    • 2007 August 17, Ben Shpigel, “Castillo Pulls for Polanco to Continue His Streak”[1], New York Times:
      DELGADO OUT OF LINEUP The day after hyperextending his left knee as he tried to catch a foul ball, Carlos Delgado was held out of the starting lineup.

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