exogenous
/ekˈsɒdʒənəs/adjective
1- of, relating to, or developing from external factors（与）外因（有关）的; 由外因发展而来的。常与ENDOGENOUS相对。
1.1
- Biology growing or originating from outside an organism【生】外生的; 外源的：
an exogenous hormone.
外激素。
1.2
- chiefly Psychiatry (of a disease, symptom, etc.) caused by an agent or organism outside the body【主精神病学】（疾病, 症状等）外因的：
exogenous depression.
外因性抑郁。
1.3
- relat-ing to an external group or society与外部族群（或社会）有关的：
exogenous marriage.
异族通婚。
派生词
exogenously
adverb词源
mid 19th cent.: from modern Latin exogena （denoting an exogenous plant, suggested by classical Latin indigena 'native'）+-OUS.