According to the Merriam-Webster online dictionary, to "plagiarize" means:
The best way to avoid an accusation of plagiarism is to carefully cite your sources. The Harvard Guide to Using Sources provides useful tips on how to integrate and properly cite your sources to avoid plagiarism.
Always save a copy of the complete citation, even if you have the entire e-book, e-journal article, or the full item in hard copy (print). Use the saved citations to create your footnotes, bibliography, or other references within your own work. Here's why:
Most article databases provide a way to email citations to yourself, so be sure to do it!
A free and open-source reference management software to manage bibliographic data and related research materials.
ZoteroBib or zbib helps you build a bibliography instantly from any computer or device, without creating an account or installing any software.
Generate references, citations and bibliographies in a whole range of journal styles with just a few clicks.