Meaning of PER in English
prep. 1 for each; for every (two sweets per child; five miles per hour). 2 by means of; by; through (per post; per rail). 3 (in full as per) in accordance with (as per instructions). 4 Heraldry in the direction of. as per usual colloq. as usual.
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Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012