a. The act, business, or system of insuring.
b. The state of being insured.
c. A means of being insured.
a. An arrangement or agreement that protects someone from incurring future losses, as from damage, theft, illness, or death, especially a contract that transfers the risk of a specified loss to another party in exchange for the payment of a premium.
b. The sum or rate for which such a contract insures something.
c. The periodic premium paid for this coverage.
3. A protective measure: biking helmets that provide insurance against a head injury.
Being a point or score that increases one competitor's lead enough to prevent the opponent from achieving a tie with one more score: an insurance run.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.