The different order statuses are new, partially filled, filled, canceled or rejected.


New:
This is for any active order that has not reached the desired market price that you have set. 


Partially filled:

This means that your order has not been fully executed and the remaining amount is still pending execution.


Filled:
This means that your order has been fully executed.

Canceled:
A canceled order status, means this order is no longer active. Canceled orders get pruned after a few hours, so you may not see previously canceled orders in your order history.

Rejected:

If your order was rejected, your order was never placed. Rejected orders get pruned after a few hours, so you may not see previously rejected orders in your order history.