1.Inward; interior; being within any limit or surface; inclosed; opposed to external; as, the internal parts of a body, or of the earth.
2.Derived from, or dependent on, the thing itself; inherent; as, the internal evidence of the divine origin of the Scriptures.
3.Pertaining to its own affairs or interests; especially, (said of a country) domestic, as opposed to foreign; as, internal trade; internal troubles or war.
4.Pertaining to the inner being or the heart; spiritual. "With our Savior, internal purity is everything."
5.Intrinsic; inherent; real. (R.) "The internal rectitude of our actions in the sight of God."
6.(Anat.) Lying toward the mesial plane; mesial.