`   ==Revision of Definition== I changed the Latin translation of this phrase from ``this for that`` to ``something for something,`` which is more accurate and the preferred adaptation into English by three major English dictionaries. Here are my sources for three lexicons defining ``quid pro quo``: *Merriam-Webster: http://www.m-w.com/dictionary/quid%20pro%20quo *American Heritage Dictionary of the English Language http://dictionary.reference.com/search?q=quid%20pro%20quo *The New Dictionary of Cultural Literacy: http://www.bartleby.com/59/4/quidproquo.html   `