From the American Heritage Dictionary (3rd edition) – software version, comes the definition:

pla·gia·rize  v. pla·gia·rized, pla·gia·riz·ing, pla·gia·riz·es. --tr. 1. To use and pass off as one's own (the ideas or writings of another). 2. To appropriate for use as one's own passages or ideas from (another). --intr. To put forth as original to oneself the ideas or words of another. --pla“gia·riz”er n.

Note that it is plagiarism to use another’s ideas without giving credit to the originator of those ideas, and claiming those ideas as your own original ideas.  It is not just stealing specific words.

Also read the references below on the topic.


DO NOT DO IT.  If you do, you will flunk the course and the reason for the failure will go into your student record.  Every term I have taught here, and in almost every class, there has been at least one student who did not take this seriously, but got caught and paid the consequences.  If you think you can cheat and not get caught, you are not as smart as you think you are.