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permillage

American  
[per-mil-ij] / pərˈmɪl ɪdʒ /

noun

  1. a rate or proportion per thousand.

Etymology

Origin of permillage

First recorded in 1885–90; per mill + -age

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.