endogenous

 
Pronunciation: /ɛnˈdɒdʒɪnəs, ɪn-/

adjective

  • having an internal cause or origin: the expected rate of infection is endogenous to the systemOften contrasted with exogenous.
  • Biology growing or originating from within an organism: endogenous gene sequences
  • chiefly Psychiatry (of a disease or symptom) not attributable to any external or environmental factor: endogenous depression
  • confined within a group or society.

Derivatives

endogenously

adverb