MEDICAL,USA: 1. Insurance policy that has not expired. 2. Original premium paid on an insurance policy that has not expired. 3. Total quantity of insurance at any specific time as far as cases, lives, amount (volume) of insurance, or premiums.
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A contract is said to be in force long as it remains operative until it expires or is cancelled.
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UK: A policy is in force from the time of inception until the time of expiry unless previously cancelled.