VALIDITY

cogency, validity, rigor, rigour

(noun) the quality of being valid and rigorous

validity, validness

(noun) the quality of having legal force or effectiveness

Source: WordNet® 3.1

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Etymology

Noun

validity (countable and uncountable, plural validities)

The state of being valid, authentic or genuine.

State of having legal force.

A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).

Source: Wiktionary

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Va*lid"i*ty, n. Etym: [Cf. F. validité, L. 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)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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