The phrase "cumulative amount" refers to the total or overall sum of something that has been gradually added or accumulated over a period of time. Full definition
Since CO2 lasts in the atmosphere for a very long time (100's to 1000's of years) it is the total cumulative amount of emissions that matter. (centerforcarbonremoval.org)
• The borrower has made at least three consecutive minimum monthly payments or the equivalent cumulative amount. (fdic.gov)
If you are logged in, your name and cumulative amount raised is noted in the top right corner. (collierescueleague.org)