From milli- +‎ -ile.

millile (plural milliles)

1. (statistics) Any of the values in a series that divides the distribution of individuals in that series into a thousand groups of equal frequency.

   Synonym: permillile

• (statistics):
• median (2-quantile), tercile/tertile (3), quartile (4), pentile/quintile (5), sextile (6), septile (7), octile (8), decile (10), hexadecile (16), ventile/vigintile (20), centile/percentile (100), /permillile (1000)

From Blend of milli- +‎ centile.

• IPA^(key): /mi.lil/

• Audio (France (Toulouse)):

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millile m (plural milliles)

1. (statistics) millile