The family of *(functional) *(programming language)s inspired by _(John McCarthy)'s original notation for computations, later becoming _(Lisp 1.5|http://green.iis.nsk.su/~vp/doc/lisp1.5/mccarthy.html), MacLisp, InterLisp, and some of the more modern implementations.

The key feature of the Lisp family is that they all are late-bound languages that use parentheses as the basic delimiter of evaluation forms, and all forms are expressions without exception. The uniform syntax turned out to allow the use of _(metaprogramming) through manipulation of the list-representation of this syntax, called symbolics expressions, or S-Expressions for short (even shorter, "SEXP").

Lisp is also defined as a program in itself: <code>(loop (print (eval (read))))</code>, called the _(read-eval-print loop|REPL). Many great books in computer science have been written using or covering this language.