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English definition of “extra-”

extra-

prefix     /ekstrə-/
outside or in addition to: Because schools rely heavily on property taxes to fund extracurricular activities , districts in less affluent areas are struggling to fund them.
very, or more than usual : The city passed an ordinance that requires economic impact studies for Supercenters and other extra-large stores .
(Definition of extra- prefix from the Cambridge Business English Dictionary © Cambridge University Press)
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