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cons (third-person singular simple presentconses, present participleconsing, simple past and past participleconsed)
(programming) To obtain a list from a cons or a nesting of conses; to prepend an element to a list by forming a cons of that element and the list; to obtain a list from a smaller one by repeated application of such kind of prepending.
1992, Peter Norvig, Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp, Morgan Kaufmann, →ISBN, page 62:
This version of length arises naturally from the recursive definition of a list: “a list is either the empty list or an element consed onto another list.”
