extra- prefix - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of extra- prefix from the Oxford Advanced American Dictionary

extra-

prefix

NAmE//ˈɛkstrə//

(in adjectives)

1outside; beyond extramarital sex extraterrestrial beings

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2(informal) very; more than usual extra-thin extra-special

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