retrocession

/R EH0 T R OW0 S EH1 SH AH0 N/
noun
  1. 1

    The transfer of risk from one reinsurer to another.

  2. 2

    The return of land, rights, etc. previously ceded.

  3. 3

    Metastasis of an eruption or tumour from the surface to the interior of the body.

  4. 4

    The act of retroceding; a going back.

Source: https://en.wiktionary.org/wiki/retrocession