Q. What is a pre-print version of an article?
Though there is no single definitive definition of pre-print, the most common usage is to describe the version of the article that was submitted to the publisher. It is the article before it was peer reviewed.
Pre-print is sometimes called the submitted manuscript.
To ensure that this is the definition used by your publisher see the license terms on the publisher web-site.
Feel free to contact the library for more assistance.