What is the meaning of Internal?

Of or situated on the inside.

Within the body.

Concerned with the domestic affairs of a nation, state or other political community.

Concerned with the non-public affairs of a company or other organisation.

Present or arising within an organism or one of its parts.

Applied or intended for application through the stomach by being swallowed.

Experienced in one's mind; inner rather than expressed.

Of the inner nature of a thing.

Attending a university as well as taking its examinations.

internal

Source: wiktionary.org