Definition of ripple effect in English English dictionary
the effect of one event setting off other events in an unexpected way, or unexpected areas
Defaults in America's mortgage lending businesses are causing a ripple effect through the major banks in other continents.
If an event or action has a ripple effect, it causes several other events to happen one after the other. Delayed flights have a ripple effect. Just one late flight could be carrying passengers for a dozen connecting services. = knock-on effect. A gradually spreading effect or influence: "Those deviations tend to have a ripple effect throughout the economy as a whole" (Tom Clancy)