Oxford logo
Toggle navigation
Redeem
Upgrade
Help
Sign in
Dictionaries
Dictionaries home
English
American English
Academic
Collocations
German-English
Grammar
Grammar home
Practical English Usage
Learn & Practise Grammar (Beta)
Word Lists
Word Lists home
My Word Lists
Topics
Recent additions
Resources
Resources home
Text Checker
Sign in
Dictionaries
Dictionaries home
English
American English
Academic
Collocations
German-English
Grammar
Grammar home
Practical English Usage
Learn & Practise Grammar (Beta)
Word Lists
Word Lists home
My Word Lists
Topics
Recent additions
Resources
Resources home
Text Checker
Redeem
Upgrade
Help
TOP
American English
English
American English
Academic English
Collocations
Practical English Usage
German-English
English-German
English
American English
Enter search text
Definition of
ultra- prefix
from the Oxford Advanced American Dictionary
ultra-
prefix
prefix
NAmE
/
/
ˈʌltrə
/
/
jump to other results
(
in adjectives and nouns
)
extremely; beyond a particular limit
ultra-modern
ultraviolet
compare
infra-
See
ultra-
in the Oxford Advanced Learner's Dictionary
Check pronunciation:
ultra-
Other results
All matches
ultra
noun
ultra vires
adverb
ne plus ultra
noun
ultra-high frequency
noun
UHF
abbreviation
UMPC
noun
Nearby words
ultimatum
noun
ultra
noun
ultra-
prefix
ultra-high frequency
noun
ultralight
noun