Specificity

Noun

1. The state of being specific rather than general.
2. The extent to which a characteristic is specific to a given person, place, or thing; thus: The probability, in a binary classification test, of a true negative being correctly identified.
3. The probability, in a binary classification test, of a true negative being correctly identified.
4. The extent to which a particular diagnostic test is specific for, or a symptom or sign is specific to, a given condition.