(insurance) Risks that are produced by a non-human source and are beyond human control. They are unexpected but happen regularly enough in a general population to be broadly predictable. Good examples of external risks are natural disasters such as earthquakes and volcanoes.

(economics) An externality arising from network effects.

A signal (stimulus) that originates from outside an organism.

plural of external ear

plural of external risk

plural of network externality

(philosophy) The world consisting of all the objects and events which are experienceable or whose existence is accepted by the human mind, but which exist independently of the mind.

(literary theory) A conflict that is between a character and an external force, such as another character.

plural of external link

plural of external stimulus