Original Insurer

The insurer which writes a policy for a policyholder (which may or may not create the need for reinsurance).
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The underwriter who writes the original risk that is the subject matter of the Reinsurance contract.

Original Terms

A reinsurance expression signifying that the reinsurance is granted on the same conditions and at the same rate of premium as the original insurance.
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UK: reinsurance granted on the same conditions and the same rate of premium as the original insurance.