Meaning of res ipsa loquitur

res ip•sa lo•qui•tur

Pronunciation: (rēz' ip'su lō'kwi-tur, lok'wi-, rās'), [key]
— Law. Law.
  1. the rule that an injury is due to the defendant's negligence when that which caused it was under his or her control or management and the injury would not have happened had proper management been observed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.