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definitions
  • synonyms

per mill

or per mil

[pur mil, per]
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adverb
  1. per thousand.
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Origin of per mill

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for per mill

per mill

per mil

adverb
  1. by the thousand or in each thousand
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Word Origin

C19: from per + French or Latin mille thousand, on the model of per cent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012