validity

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Validity is on the Academic Word List.

Pronunciation[change]

Noun[change]

Singular
validity

Plural
validities

  1. (uncountable) The validity of a licence, ticket, document, etc. depends on whether it is official and acceptable.
    The validity of a passport depends on who carries it.
  2. (uncountable) The validity of evidence, a statement, a reason, etc. is the level to which it is true or reasonable.
    Due to the doubts about the validity of the evidence presented, the case cannot go forward.
  3. (uncountable) In testing, the validity of a test is the level to which it is tests what it is supposed to test.
    The validity of many IQ tests has been questioned.
  4. (countable) A validity is a quality of measurement that shows the degree by which the measurement reflects the thing beneath it.

Antonyms[change]

Related words[change]