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English definition of “per”

per

preposition     strong /pɜːr/ US  /pɝː/ weak /r/ US  //
A2 used when expressing rates, prices, or measurements to mean 'for each': The meal will cost $20 per person. The car was travelling at 70 miles per hour (70 mph). There are more cafés per square mile here than anywhere else in the country. → See also percentBoth, all, each and every
(Definition of per preposition from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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