Transmitting a file from your computer to another computer. "File upload" is essentially the same term as "upload," because most of the time data are transmitted as a structural unit known as a "file."
"file upload." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/file-upload>.
file upload. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/file-upload