Definition of: plagiarize

(plā′jə·rīz, -jē-ə-) v. ·rized, ·riz·ing v.t.
1. To appropriate and pass off as one's own (the writings, ideas, etc., of another).
2. To appropriate and use passages, ideas, etc., from.
—v.i.
3. To commit plagiarism. Also Brit. pla′gia·rise.
—pla′gia·riz′er noun