/ ekˈsɒdʒənəs; ɪk-; NAmE ekˈsɑːdʒ-/ adjective
( medical ) ( of a disease or symptom ) having a cause that is outside the body
—compare endogenous
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WORD ORIGIN
mid 19th cent.: from modern Latin exogena (denoting an exogenous plant, suggested by classical Latin indigena native) + -ous .