Quantitative Easing

What Does Quantitative Easing Mean?
A government monetary policy occasionally used to increase the money supply by buying government securities or other securities from the market. Quantitative easing increases the money supply by flooding financial institutions with capital in an effort to promote increased lending and liquidity. 

Investopedia explains Quantitative Easing
Central banks tend to use quantitative easing when interest rates have already been lowered to near 0% levels and have failed to produce the desired effect. The major risk of quantitative easing is that although more money is floating around, there is still a fixed amount of goods for sale. This will eventually lead to higher prices or inflation.