What is an acronysm?

An acronym is a word formed from the initial letters or groups of letters of a series of words. For example, the word "scuba" is an acronym for "self-contained underwater breathing apparatus." Acronyms are often used to represent organizations, concepts, or terms that are long or complex. For instance, NASA is an acronym for "National Aeronautics and Space Administration," and HTML is an acronym for "Hypertext Markup Language."