We don't have synonyms for reinsurances yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are reinsurance, reassurances and insurances.
(n) :
(business, insurance) Insurance purchased by insurance companies that spreads the risk associated with selling insurance around so the danger of one large monetary loss is minimized. Such insurance and catastrophe bonds are backstops to insurer insolvency from unexpectedly large losses.
(n) :
(business, insurance) Insurance purchased by insurance companies that spreads the risk associated with selling insurance around so the danger of one large monetary loss is minimized. Such insurance and catastrophe bonds are backstops to insurer insolvency from unexpectedly large losses.