According to Oxford Dictionary of English, plagiarism is "the practice of taking someone else's work or ideas and passing them off as one's own." Plagiarism is presenting someone else’s work or ideas as your own, with or without their consent, by incorporating it into your work without full acknowledgement. All published and unpublished material, whether in manuscript, printed or electronic form, is covered under this definition. Plagiarism may be intentional or reckless, or unintentional.
In 2015, iThenticate have conducted a survey of scientific researchers, and identified ten common types of plagiarism in research.