emacs lp what is
Definition of Emacs LISP for programmer: used by the GNU Emacs and XEmacs text editors (which will.

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Definition Emacs LISP

Explanation: Emacs LISP is a dialect of the Lisp programming language used by the GNU Emacs and XEmacs text editors (which will be collectively referred to as Emacs in this article.) It is used for implementing most of the editing functionality built into Emacs, the remainder being written in C. Users of Emacs commonly write Emacs Lisp code to customize and extend Emacs.

Other definitions in programming such as Emacs LISP in Dictionary E.