validity Meaning, Definition & Usage

  1. noun the quality of being valid and rigorous
    rigor; rigour; cogency.
  2. noun the quality of having legal force or effectiveness
    validness.
  3. noun the property of being strong and healthy in constitution
    hardiness; robustness; lustiness.

WordNet

Va*lid"i*ty noun
Etymology
Cf. F. validité, L. validitas strength.
Definitions
  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. Obs. "Rich validity." Shak.

Webster 1913