The Free On-line Dictionary of Computing (30 December 2018):

Hamming code

    Extra, redundant bits added to stored or
   transmitted data for the purposes of error detection and
   correction.

   Named after the mathematician Richard Hamming, Hamming codes
   greatly improve the reliability of data, e.g. from distant
   space probes, where it is impractical, because of the long
   transmission delay, to correct errors by requesting
   retransmission.

   [Detail?  Connection with Hamming Distance?]

   (2002-07-02)