endogeny

/ɛnˈdɑdʒəni/
noun
  1. The process of growing or developing from within an organism or system, rather than from external causes.
    • The biologist explained how endogeny helps certain fungi reproduce without outside triggers.
    • Endogeny in plants allows new shoots to form inside the stem.
    • In geology, endogeny refers to processes like volcanic activity that come from inside the Earth.