Home › Words › H › hologenesishologenesishologenesis means A theory of evolution in which each species divides into two, only one of which develops successfully.EtymologyFrom holo- + -genesis, from Italian ologenesi, ultimately from Ancient Greek roots ὅλος (hólos, “whole”) and γένεσις (génesis, “origin, creation”).nounA theory of evolution in which each species divides into two, only one of which develops successfully.Definitions & examples from Wiktionary (CC BY-SA 3.0).