Definition of exogenous adjective from the Oxford Advanced Learner's Dictionary

 

exogenous

 adjective
adjective
BrE BrE//ekˈsɒdʒənəs//
 
, BrE//ɪkˈsɒdʒənəs//
 
; NAmE NAmE//ekˈsɑːdʒənəs//
 
(medical)
 
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(of a disease or symptom) having a cause that is outside the body compare endogenous Word Origin mid 19th cent.: from modern Latin exogena (denoting an exogenous plant, suggested by classical Latin indigena ‘native’) + -ous.
See the Oxford Advanced American Dictionary entry: exogenous