Turnitin is a web-based plagiarism detection software widely used in academic institutions. Its primary function is to scan student submissions for textual similarities against a massive database of academic papers, websites, periodicals, and other student work. It generates an Originality Report (often called a "similarity score") that highlights matching text and provides a percentage of content that appears elsewhere.
Never upload your Liberty University assignments to online "study" repositories like CourseHero or Chegg. Turnitin crawls those sites. If another student downloads and submits your paper, you could be held liable for facilitating cheating. turnitin liberty university