Noun

1. The act of plagiarizing: the copying of another person's ideas, text or other creative work, and presenting it as one's own, especially without permission.

   Though plagiarism in and of itself is not illegal, it is usually frowned upon; and many cases of plagiarism involve illegal copyright violation.

2. Text or other work resulting from this act.

   The novel contained many instances of plagiarism; in fact, some entire passages were lifted verbatim from other novelists' work.