pro-rata

[proh-rey-tuh, -rah-]

adjective

proportionately determined: a pro-rata share of income.

pro rata

[proh rey-tuh, rah-]

adverb

in proportion; according to a certain rate.

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 of pro-rata

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.
Religious Folk-Songs of the Southern Negroes
Howard W. Odum
I would like to have you immortalize yourself by saving your company its pro-rata share of this economic waste.
Letters from an Old Railway Official
Charles DeLano Hine

British Dictionary definitions for pro-rata

pro rata

in proportion

Word Origin for pro rata

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.)).