• Source: NRR
    • NRR may refer to:


      Club


      Newport Reading Room, a gentlemen's club in Newport, Rhode Island


      Electronic mail


      No Reply Required in the subject field of an email


      Law and regulation


      National Recording Registry in the United States
      Non-Repudiation of receipt, a legal acknowledgement of origination/authorship of a document (as per internet RFC4130)
      Office of Nuclear Reactor Regulation in the United States


      Medicine/science


      Net reproduction rate in human fertility
      Nitrogen reduction reaction, the conversion of N2 to ammonia
      Noise reduction ratings in hearing protectors


      Music


      National Rock Review, an American website for rock music reviews and interviews


      Business


      Customer retention#NRR: Net Revenue Retention


      Sport


      Net run rate in cricket


      Places


      IATA code of José Aponte de la Torre Airport in Ceiba, Puerto Rico

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