• synonyms


[proh-rey-tuh, -rah-]
  1. proportionately determined: a pro-rata share of income.
Show More

pro rata

[proh rey-tuh, rah-]
  1. in proportion; according to a certain rate.
Show More

Origin of pro rata

First recorded in 1565–75, pro rata is from the Medieval Latin word prō ratā
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for pro-rata

Historical Examples

  • Anything beyond that fairly good lapse of continuous labor was paid for as overtime “pro-rata.”

    Our Railroads To-Morrow

    Edward Hungerford

  • She sung her new song to the crowds wherever she went, and then was given a pro-rata of the collections.

  • I would like to have you immortalize yourself by saving your company its pro-rata share of this economic waste.

British Dictionary definitions for pro-rata

pro rata

  1. in proportion
Show More

Word Origin

Medieval Latin
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

Word Origin and History for pro-rata

pro rata

1570s, from Latin pro rata (parte) "according to the calculated (share)," from pro "for" (see pro-) + rata, ablative singular of ratus, past participle of reri "to count, reckon" (see rate (n.)).

Show More
Online Etymology Dictionary, © 2010 Douglas Harper