Mental Floss put together a list of commonly used...  ...f commonly used English words that initially were errors . One example is the word "tornado." It originated...  ...chaun."Learn nine other words that initially were errors here. Image: Wikihow.com

No doubt about it -these are horror stories. There's the 13-inch metal tool left in a patient's body, the women who underwent heart surgery scheduled for a different patient, and several cases of surgery on the wrong sid...