To rely on for support; to be conditioned or contingent; to be connected with anything, as a cause of existence, or as a necessary condition.
Elliptical use of "depend on": "That depends"
have faith or confidence in; "you can count on me to help you any time"; "Look to your friends for support"; "You can bet on that!"; "Depend on your family in times of crisis"
be contingent upon (something that is ellided); "That depends"
