The full form of POTUS is President Of The United States. It’s used on Governmental ,Titles in United States
President Of The United States (POTUS) is the elected head of government of the United States. The acronym POTUS originated in the Phillips Code, a shorthand method created by Walter P. Phillips for the rapid transmission of press reports through telegraph. And also for the reason that the telegraphs were charged on the length of the message.