dependency

About 7.55 uses per million words.

Meaning

noun A state of dependence; a refusal to exercise initiative.
Frank's sullen dependency was driving his father nuts.
noun Something dependent on, or subordinate to, something else:
In the United States' governmental structure, the military is conceived as a dependency under the executive branch.
noun The status of being a legal dependent; the relationship between a dependent and their provider.
noun A colony, or a territory subject to rule by an external power.
noun A dependence on a habit-forming substance such as a drug or alcohol.
noun Reliance on the functionality provided by some other, external component.
This library has dependencies on a lot of other libraries. We have to compile all of those other libraries first.
noun An external component whose functionality is relied on.
One of this library's dependencies is very finicky. It can be hard to get it to compile on some systems.