A "domino-style" effect is when one event sets off a chain of events. This is much like what happens when one falling domino causes the entire row of upended dominoes to fall. This phenomenon is also known as the "domino effect".

What Jason said. :) An example of when this is referred to is what the Americans used to believe about communism - if one country became communist, the surrounding countries would become communist too - like dominoes toppling. (This theory later proved to be wrong though..)

A "domino-style" effect is when one event sets off a chain of events. This is much like what happens when one falling domino causes the entire row of upended dominoes to fall. This phenomenon is also known as the "domino effect".