co-insurance
noun[U]
INSURANCE(alsocoinsurance)ukusasituationin which two or moreinsurancecompaniessharearisk
in the US, asystemofhealthinsurancein which thepatientpaysapercentageof thecostoftheirtreatment:
We've alsoseenemployersmovingaway from copayment to coinsuranceplans.
co-insurer
noun[C](alsocoinsurer)