What does it Mean? 1. The degree to which an asset or security can be bought or sold in the market without affecting the asset's price. Liquidity is characterized by a high level of trading activity. 

2. The ability to convert an asset to cash quickly. Also known as "marketability".
Investopedia Says...1. It is safer to invest in liquid assets than illiquid ones because it is easier for an investor to get his/her money out of the investment. 

2. Examples of assets that are easily converted into cash include blue chip and money marketsecurities.