Definition of per mill in English:

per mill

Syllabification: per mill
(also per mil)


One part in every thousand.
More example sentences
  • Isotopic concentrations were expressed as delta values in per mill.
  • He says the loss of sales per day for the industry is around 2 per day per mill.
  • According to the bylaw, the levy will be one per mill of the value of the animal.


late 17th century: Latin.

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