The Community College of Vermont's Academic Honesty Policy (PDF) defines plagiarism as "the presentation of the language, ideas, or thought of another person as one's own work in the preparation of a paper, laboratory report, oral presentation, or any other presentation."
Examples of plagiarism:
turning in someone else's work as your own, whether it's purchased from the Internet, written by a friend, or obtained elsewhere
copying words, images, or ideas from someone else without giving credit
failing to put quoted passages in quotation marks
giving incorrect information about the source of a quotation
- changing words but copying the ideas of a source without giving credit
Plagiarism can easily be avoided by citing your sources.