McMaster's Definition of Plagiarism

Section 18.a):
plagiarize, i.e. submit academic work that has been, entirely or in part, copied from or written by another person without proper acknowledgement, or, for which previous credit has been obtained

Appendix 3, Section 2:
Plagiarism, which is the submission of material that has been, entirely or in part, copied from or written by another person, without proper acknowledgment, is probably the most common form of academic dishonesty. All material, including information from the internet, anonymous material, copywrited material, published and unpublished material and material used with permission, must be properly acknowledged. There are two aspects to using material from other sources of which students should be aware. In a direct quotation of text or material, it is important to distinguish the text or material that has been taken from the other source. Common methods of identification of directly quoted material include indentation, italics, quotation marks or some other formatting change to separate the quoted material from the student’s own work. Indirectly quoted material involves expressing an idea, concept or interpretation that one has obtained from another source, in one’s own words. Direct and indirectly quoted material requires a reference or footnote in the text and full citation in the references or bibliography, in accordance with the standards appropriate to the discipline.