An equal exchange or substitution, as in I think it should be quid pro quo—you mow the lawn and I'll take you to the movies. This Latin expression, meaning “something for something,” has been used in English since the late 1500s.
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I do not understand it—there is no quid pro quo in the business to my apprehension. But the greatest cheat is in the substituting business; the quid pro quo. But you must know that I shall have at least my quid pro quo. All life and all art is a quid pro quo; the writer must barter his time and sweat for his raw materials, ideas.
http://www.dictionary.com/browse/quid-pro-quo
A fair exchange; the phrase is most frequently used in diplomacy: “The Chinese may make some concessions on trade, but they will no doubt demand a quid pro quo, so we must be prepared to make concessions too.” From Latin, meaning “something for something.”.
http://www.dictionary.com/browse/quid
Going public and offering stock in an initial public offering represents a milestone for most privately owned companies. A large number of reasons exist for a company to decide to go public, such as obtaining financing outside of the banking system or reducing debt.
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Quid Pro Quo Contributions. Contributions of more than $75 that give a benefit to the donor are considered quid-pro-quo contributions. They are deductible only to the extent the contribution exceeds the value of the benefit, and this must be spelled out in writing. The benefit can be in the form of cash, property, services, or privileges..
http://www.businessdictionary.com/definition/quid-pro-quo.html
A fair exchange; the phrase is most frequently used in diplomacy: “The Chinese may make some concessions on trade, but they will no doubt demand a quid pro quo, so we must be prepared to make concessions too.” From Latin, meaning “something for something.”.
http://www.dictionary.com/browse/quid-pro-quo
Quid Pro Quo. [Latin, What for what or Something for something.] The mutual consideration that passes between two parties to a contractual agreement, thereby rendering the agreement valid and binding. In common usage, quid pro quo refers to the giving of one valuable thing for another.
http://legal-dictionary.thefreedictionary.com/Quid-pro-quo
1560s, from Latin, literally something for something, one thing for another, from nominative and ablative neuter singulars of relative pronoun qui who (see who) + pro for (see pro-) + quo, ablative of quid.
http://www.dictionary.com/browse/quid-pro-quo
Learner's definition of QUID PRO QUO. [count] : something that is given to you or done for you in return for something you have given to or done for someone else. If he helps us, he'll expect a quid pro quo. [=he'll expect us to do something for him] [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
http://www.learnersdictionary.com/definition/quid%20pro%20quo
Quid pro quo, or the exchange of valuable consideration, is required for the formation of a valid contract between individuals who are not merchants. This requirement of mutual consideration, or the exchange of something of value, indicates the sincerity of the parties' intent to adhere to the contract between them.
http://legal-dictionary.thefreedictionary.com/Quid-pro-quo
define quid pro quo definition
Quid pro quo is something that is given to you or done for you in return for something you have given to or done for someone else.