Retraction refers to the act of withdrawing or removing something that was previously published, stated or claimed. It is an admission that what was said or written before was incorrect and should no longer be considered accurate. Retractions can occur in various forms such as a public apology, a correction in print or online media, or even the removal of content from websites. The purpose of retraction is to correct misinformation, restore credibility, and prevent further spread of false information.