/jen' sim/ (From the MacLISP for "generated symbol") To invent a new name for something temporary, in such a way that the name is almost certainly not in conflict with one already in use.The canonical form of a gensym is "Gnnnn" where nnnn represents a numberany LISPhacker would recognise G0093 (for example) as a gensym.Gensymmed names are useful for storing or uniquely identifying crufties.[Jargon File](1999-10-31)