Domino effect is basically the process in which one thing leads to the other. It is a chain reaction, wherein one event sets of the other. And it comes from the game of domino blocks. If these blocks are placed in a line, then tripping one can lead to the fall of all others. Just like in the video, where each object acts like a domino block.
Have a look at this video and then you should be able to understand the word:
Dictionary Definition for Domino Effect:
The cumulative effect that results when one event precipitates aseries of like events.
The following are a few phrases that are related to the word Domino Effect:
1. Cause and effect
2. Chain of events
3. Contagion effect,
4. Knock-on effect
5. Ripple effect
6. Slippery slope
Usage examples for domino effect:
1. Using those figures, economists then factor in what’s called a multiplier – because every dollar spent creates a domino effect that ripples through the rest of an economy.
2. And so what happens is, if new home prices start to decline, it sets the — it’s a domino effect for everything else in the market and prices of every related commodity begin to decline.
How did this term end up becoming a part of everyday parlance? Please read further on:
http://en.wikipedia.org/wiki/Domino_theory#Domino_effect