/vəˈlɪdəti/
NOUN
The quality or condition of being logically sound, factually correct, acceptable, or supported by sufficient evidence.
The quality of being genuine, believable, trustworthy, or consistent with established facts.
The quality of an argument, claim, or conclusion being logically convincing and supported by adequate grounds or evidence.
The quality of being suitable, pertinent, applicable, or appropriate to a particular situation, purpose, or requirement.
The condition of meeting required standards or being satisfactory and acceptable for a particular purpose.
NOUN
The condition of being legally binding, authorized, or recognized as having legitimate legal effect.
The quality of a law, agreement, document, or official action being legally recognized and having binding force.
NOUN
A quality of a measurement indicating the degree to which it accurately reflects the underlying concept or construct it is intended to measure.
The extent to which a test, survey, instrument, or research method measures what it is designed or intended to measure.