Real Dictionary

depend
verb: If you can depend on a person, organization, or law, you know that they will support you or help you when you need them.
verb: If you depend on someone or something, you need them in order to be able to survive physically, financially, or emotionally.
verb: If you say that one thing depends on another, you mean that the first thing will be affected or determined by the second.
verb: You use depend in expressions such as it depends to indicate that you cannot give a clear answer to a question because the answer will be affected or determined by other factors.

depend in American English
to be influenced or determined by something else; be contingent (on)
intransitive verb: to rely; place trust

depend in British English
to put trust (in); rely (on); be sure (of)