Webster's Revised Unabridged Dictionary · 1913

Validity

Validity , noun

[Compare French validité, Latin validitas strength.]

1.
The quality or state of being valid; strength; force; especially, power to convince; justness; soundness; as, the validity of an argument or proof; the validity of an objection.
2.
(Law) Legal strength, force, or authority; that quality of a thing which renders it supportable in law, or equity; as, the validity of a will; the validity of a contract, claim, or title.
3.
Value. [Obsolete]
Rich validity. — Shakespeare