in·sur·ance [in-shoor-uhns, -shur-]

1. payment proportionate to the risk involved.the act, system, or business of insuring property, life, one's person, etc., against loss or harm arising in specified contingencies, as fire, accident, death, disablement, or the like, in consideration of a m, or business of insuring property, life, one's person,

2. contract.coverage by contract in which one party agrees to indemnify or reimburse another for loss that occurs under the terms of the overage by contract in which one party agrees to indemnify or

3. policy.the contract itself, set forth in a written or printed agreement or e contract itself, set forth in a written or printed agreement or

4. the amount for which anything is insured.

5. an insurance premium.

6. is viewed as an insurance against catching colds.Taking vitamin C Taking vitamin C any means of guaranteeing against loss or harm.