retroviruses

/R EH0 T R OW0 V AY1 R AH0 S IH0 Z/
noun
  1. 1

    Any of a group of viruses which insert a copy of their RNA genome into the DNA of a host cell, thus changing the genome of that cell.

Source: https://en.wiktionary.org/wiki/retrovirus, https://en.wiktionary.org/wiki/retroviruses