Trip cancellation refers to a provision in travel insurance policies that covers the cost of canceling or interrupting a trip due to unforeseen circumstances. This means that if an unexpected event occurs, such as illness, natural disasters, or family emergencies, and you need to cancel your trip, the insurance company will reimburse you for any non-refundable expenses you have already paid, up to the policy's maximum benefit. Trip cancellation is an important coverage to consider when purchasing travel insurance as it helps protect against financial losses due to unforeseen circumstances that may force you to cancel or interrupt your trip.