The full form of Facebook is the name “Facebook” originated from the name of directories that were distributed to students at the beginning of the academic year to help students get to know each other. It’s used on Computing ,Internet in Worldwide

Facebook (FB) is a social networking service and website operated and owned by Facebook, Inc.

Face book was a generic term used to refer printed or online directory found at American universities consisting of photographs, names, and limited biographical data of their students. In particular, it denotes the publications of this type distributed by university administrations at the start of the academic year with the intention of helping students get to know each other (socializing). The social networking site was originally called thefacebook.com and was later changed to facebook.com