Meaning of “co-insurance” in the English Dictionary

"co-insurance" in Business English

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co-insurancenoun [ U ]

also coinsurance uk us INSURANCE

a situation in which two or more insurance companies share a risk

in the US, a system of health insurance in which the patient pays a percentage of the cost of their treatment:

We've also seen employers moving away from copayment to coinsurance plans.
noun [ C ] also coinsurer

(Definition of “co-insurance” from the Cambridge Business English Dictionary © Cambridge University Press)