Teleportation is the instantaneous transfer without the use of a gate or even moving one's self. It is the pinnacle of transfer/movement type abilities.
However, to use it exhausts a tremendous amount of magic. Because of this it is typically not used in rapid succession or in cases outside of an emergency situation.
The use of teleportation without a chant is even more difficult, and only a few high ranked demons/devils are known to be able to do it.