Greater than
Toward the outside of, away from
External to, on the outside of
Forms verbs with the sense of surpassing or exceeding the prefixed word. This construction is productive.
Completely
Beyond
Greater than normal quantity or importance, as in ultrasecret.
Excessively, to an extreme, as in ultramicroscopic, ultra-careful.
Beyond, outside of, as in ultrasonic.
intensely, extremely, or exceptional
Beyond, on the far side of, as in ultraviolet.