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English definition of “per”

per

preposition uk   strong /pɜːr/ us    /pɝː/ weak /r/  //
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.
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(Definition of per from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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