Market order is defined as a request to buy or sell an asset (stock, cryptocurrency, etc.) at the current available price. A market order’s priority is speed.
A market order is used to immediately purchase or sell an asset. It is best used when your priority is speed rather than hoping to get the best price and maximize your profit.
The risk with market orders is that the price may change rapidly in between the time you place your order and when it is fulfilled. That risk is larger for big orders or with a slow Internet connection.
Compare with Limit Order.