Early 20th century; earliest use found in Frederic W. H. Myers (1843–1901), psychical researcher and essayist. From pre- + incarnation. Compare earlier pre-incarnate and slightly later post-Incarnation.
Definition of pre-incarnation in US English:
pre-incarnation
noun
A previous incarnation or embodiment.
Origin
Early 20th century; earliest use found in Frederic W. H. Myers (1843–1901), psychical researcher and essayist. From pre- + incarnation. Compare earlier pre-incarnate and slightly later post-Incarnation.