Noun
cumulative effect (plural cumulative effects)
The state in which a series of repeated actions have an effect greater than the sum of their individual effects; noted especially in the repeated administration of drugs or repeated consumption of trace elements or chemicals that show no immediate effect.
A man's accomplishments in life are the cumulative effect of his attention to detail. John Foster Dulles
There's a cumulative effect to getting good parts as a freelance actor, because you're only as good as your last job, and you have to keep going out and getting them. Unless you're part of the finance structure, by which I mean a bankable star, which I never was and never will be. Bruce McGill