The phrase "cumulative loss" refers to the total amount of loss or damage that has accumulated over a period of time. It means adding up all the individual losses together to calculate the overall impact. Full definition
In contrast, oil producers posted cumulative losses of $ 32 billion over the course of the last three years as revenues declined sharply following the global collapse in oil prices. (business.financialpost.com)
A single fire could wipe out everything, with cumulative losses of anywhere from several hundred thousand dollars to $ 1 million. (trustedchoice.com)
We'll need another half decade to achieve parity between cumulative loss and gain. (skepticalscience.com)