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Also, permil, per mil, per mille, promille
1) per (every) thousand (Latin)
2) one thousandth

3) the fraction 1/1000

4) the decimal 0.001

5) the symbol ‰
Baseball batting averages are written as a permille.
Legal limits blood alcohol content for driving a road vehicle in some countries are 0.5‰ or 0.2‰.
by Nutralizr May 30, 2011
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