Specificity

n. quality of being specific; condition of being unique to a particular organism or group of organisms

Specificity may refer to: Specificity (tests), a measure of a test's effectivenessA concept relating to Cascading Style Sheets
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Noun
1. the quality of being specific rather than general; "add a desirable note of specificity to the discussion"; "the specificity of the symptoms of the disease"
(hypernym) particularity
2. the quality of being specific to a particular organism; "host specificity of a parasite"
(hypernym) particularity

When referring to a medical test, specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific because some people who do not have the disease will test positive for it (false positive).

specificity /,spesi'fisiti/ (specificness) /spi'sifiknis/
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