Definition of allogenic:
(adj) :
Having an external cause, or source; exogenous.
(adj) :
(geology) Formed in another location and transported.
(adj) :
(medicine, biology, genetics, immunology) Alternative form of allogeneic: genetically distinct, but of the same species; nonself but intraspecies. [(genetics) Genetically different because of being derived from separate individuals of the same species.]