from The American Heritage® Dictionary of the English Language, 4th Edition

  • adv. In proportion, according to a factor that can be calculated exactly.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adv. In proportion to some factor that can be exactly calculated.

from the GNU version of the Collaborative International Dictionary of English

  • prep. In proportion; proportion.
  • In proportion; proportionately; according to the share, interest, or liability of each.

from The Century Dictionary and Cyclopedia

  • In proportion.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adv. in proportion


Latin prō ratā (parte), according to the calculated (share) : prō, according to + ratā, feminine ablative of ratus, calculated.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin pro, according to + ratus, calculated (Wiktionary)


  • In your said appointments, you directed said salt to be issued pro rata to the Presidents of the Boards of Police, or to agents appointed by said boards, to be distributed by them to the indigent families of soldiers in their respective counties.

    Journal of the House of Representatives of the State of Mississippi, December Session of 1862, and November Session of 1863

  • *A tontine is a financial arrangement whereby a fixed group takes shares in an investment—in this case the coffeehouse—paying out pro rata as each dies or drops out; the last one standing gets the whole shebang.

    City of Glory

  • Consequently, if a certain debt has not been certainly paid, at least a payment pro rata dubii is required according to the prevailing view.

    The Catholic Encyclopedia, Volume 12: Philip II-Reuss

  • But in as much as the Church has spoken of strict justice (justitia commutativa), the overwhelming majority of theologians incline even theoretically to the conviction that the satisfactory -- and, according to many, also the propitiatory and impetratory -- value of a Mass for which a stipend has been taken, is so strictly circumscribed and limited from the outset, that it accrues pro rata (according to the greater or less number of the living or the dead for whom the Mass is offered) to each of the individuals.

    The Catholic Encyclopedia, Volume 10: Mass Music-Newman

  • On or about the 13th of April last, I appointed Col. West salt agent, to receive and distribute to the different counties the pro rata share of whatever salt might be obtained by purchase or manufacture, distributing the salt so received, to the Boards of Police.

    Journal of the House of Representatives of the State of Mississippi, December Session of 1862, and November Session of 1863

  • In the course of time the wagons reached Knoxville, but my troops derived little comfort from this fact, for the train was stopped by General Foster, who had succeeded Burnside in command of the department, its contents distributed pro rata to the different organizations of the entire army, and I received but a small share.

    She Makes Her Mouth Small & Round & Other Stories

  • As the other fifteen preachers differed with Mr. Bettis on how the money which had been raised should be used, they contending that it be divided pro rata among themselves that they might go to school, and he contending that it should be used for the education of those who were coming on the stage of life, and not for those who were passing off of it, he drew out and organized the Mt. Canaan Union, and later Mt. Page 35

    Brief Sketch of the Life and Labors of Rev. Alexander Bettis. Also an Account of the Founding and Development of the Bettis Academy

  • Be it resolved, by the Legislature of the State of Texas, That should the State of Texas, from any cause, withdraw from the association as a member of the Confederate States, before the indebtedness of said Confederate States is fully paid, the faith of the State is hereby pledged to the payment of her pro rata portion of such remaining indebtedness, to whoever the same may be due.

    Journal of the Senate of South Carolina: Being the Session of 1862.


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