false positive

noun
Updated on: 15 Nov 2017

Definition of false positive

: a result that shows something is present when it really is not
  • The test produced too many false positives to be reliable.

Word by Word Definitions

false play
  1. : not genuine

  2. : intentionally untrue

  3. : adjusted or made so as to deceive

  1. : in a false or faithless manner : treacherously

positive play
  1. : formally laid down or imposed : prescribed

  2. : expressed clearly or peremptorily

  3. : fully assured : confident

  1. : something positive: such as

  2. : the positive degree of comparison in a language

  3. : a positive form of an adjective or adverb


Medical Dictionary

false-positive

adjective
variants: or false positive

medical Definition of false-positive

: relating to or being a test result or an individual that is erroneously classified in a positive category (as of diagnosis) because of imperfect testing methods or procedures
  • a false-positive pregnancy test
  • … one must bear in mind the cost of needless medical procedures generated by the huge number of false-positive mammograms …
  • —David PlotkinThe Atlantic MonthlyJune 1996
— compare false-negative

false positive

noun
    • Another problem with the test … is that it also produces a number of false positives; that is, a number of neonates with elevated trypsin levels the first time they are tested are found not to have elevated levels on the second test.
    • The Journal of the American Medical Association9 Nov. 1984

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