cons

Etymology 1

noun

1. plural of con

Etymology 2

Clipping of construct.

noun

1. (programming) A data structure in Lisp that is a pair of pointers, car and cdr, used mainly for lists.
   Meronyms: car, cdr

verb

1. (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.
   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.” 1992, Peter Norvig, Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp, Morgan Kaufmann, page 62

Etymology 3

verb

1. third-person singular simple present indicative of con