from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Something that is given in return for something else or accepted as a reciprocal part of an exchange.

from The Century Dictionary.

  • noun Something given for something else; a tit for tat; in law, an equivalent; a thing given or offered in exchange for or in consideration of another; the mutual consideration and performance of either party as toward the other in a contract.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Something understood as another ; an equivocation.
  • noun law This for that; giving something to receive something else ; something equivalent ; something in return.
  • noun An equal exchange.

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

  • noun something for something; that which a party receives (or is promised) in return for something he does or gives or promises


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

[Latin quid prō quō : quid, something + prō, for + quō, ablative of quid, something.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin : "what for what" . See quid, pro, and quo


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  • The Yellow Submarine

    February 14, 2007

  • Latin for "something for something." Why does the word quo instantly make anything its part of sound like something used by turned-noses?

    March 14, 2008

  • Every time I hear this phrase I think of Dr. Lecter in his cage..."Quid pro quo, Clarice."

    December 17, 2008

  • Not to be confused with qui pro quo, which means "misunderstanding" in many Romance languages.

    Quid pro quo is not used in Italian: we use do ut des instead.

    December 17, 2008

  • somewhat similar to the concept of placebo~

    April 30, 2009