What is a Loss? Loss[los]noun1.A Loss is an injury or damage that is covered by an insurance Policy. Losses can be partial, like when wind damages part of a roof, or total, as when an automobile is “totaled” in a collision. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents If You're In An Accident Learn the best steps to take after you’ve been in an automobile accident with this useful, step-by-step video. Insuring Your Business With a Buy/Sell Agreement It may help your business be better prepared in the event of the death of a principal or key employee. Protecting Those Who Matter Most The importance of life insurance, how it works, and how much coverage you need.