What Does Lisp Mean?

Lisp is a family of computer programming languages that originated in 1958 and has since undergone a number of changes and dialects. It is considered the second-oldest high-level programming language in use today, after Fortran.

Techopedia Explains Lisp

Initially, Lisp was designed to be used as a practical mathematical notation for computer programs. The language later gained popularity and was used further for conducting artificial intelligence research, primarily thanks to computer and cognitive scientist John McCarthy, who is generally credited with the invention of artificial intelligence.