from The American Heritage® Dictionary of the English Language, 4th Edition
- Beyond; on the other side of: ultraviolet.
- Beyond the range, scope, or limit of: ultrasonic.
- Far beyond the normal or proper degree of: ultraconservative.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- Greater than normal quantity or importance
- Beyond, on the far side of
- Beyond, outside of
- Excessively, to an extreme
from the GNU version of the Collaborative International Dictionary of English
- adj. A prefix from the Latin ultra beyond (see ulterior), having in composition the signification beyond, on the other side, chiefly when joined with words expressing relations of place. In other relations it has the sense of excessively, exceedingly, beyond what is common, natural, right, or proper.
Latin ultrā-, from ultrā, beyond; see al-1 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Latin ultra ("beyond") (Wiktionary)