According to the Excelsior University Academic Integrity Policy,
"Plagiarism is the act of passing off another person’s ideas, writing, or other work as one’s own. Plagiarism can occur in writing or audio-visual format. It can occur in small portions of a student’s work or in the entire submission. Plagiarism can be either intentional or accidental but is a breach of academic integrity regardless."
The Excelsior OWL provides a detailed tutorial on understanding and avoiding plagiarism:
Watch the videos below for additional information about plagiarism: