As defined by Merriam-Webster's Dictionary, to plagiarize is:
"to steal and pass off (the ideas or words of another) as one's own : use (another's production) without crediting the source : to commit literary theft : present as new and original an idea or product derived from an existing source." Source: http://www.merriam-webster.com/dictionary/plagiarize
All of the following are considered plagiarism:
What DON'T you need to cite?
Most cases of plagiarism can be avoided, however, by citing sources. Simply acknowledging that certain material has been borrowed, and providing your audience with the information necessary to find that source, is usually enough to prevent plagiarism.
The following diagram lists 10 types of plagiarism and poor practices that should be avoided. The top of the list represents the most severe with greatest intent to the least. The far right column provides focus areas to review for improvement.
Table Last Updated: September 26, 2014 by Mary Zickafoose
The diagram severity and types are adapted from the white paper, “The Plagiarism Spectrum” (Chu, Huang, and iParadigms, 2012).
Chu, J., Huang, R., and iParadigms, US. (2012). The plagiarism spectrum: Instructor insights into the 10 types of plagiarism. Retrieved on September 18, 2014 from http://go.turnitin.com/paper/plagiarism-spectrum