selectivity

1. The state or quality of being selective.
2. The degree to which an electronic receiver is selective.

The ability of a radio receiver to separate a desired signal frequency from other signal frequencies, some of which may differ only slightly from the desired value. Selectivity is achieved by using tuned circuits that are sharply peaked and by increasing the number of tuned circuits. With a sharply peaked circuit, the output voltage falls off rapidly for frequencies increasingly lower or higher than that to which the circuit is tuned. See also Q (electricity); Radio receiver; Resonance (alternating-current circuits).

noun

The ability to distinguish, especially to recognize small differences or draw fine distinctions: discrimination, refinement, selectiveness. See precise/imprecise.

1. the accuracy of a test in identifying animals that have the disease which is under investigation; the number of false positives to the test will be low in a selective test.
2. in pharmacology, the degree to which a dose of a drug produces the desired effect in relation to adverse effects.

Charistic of a circuit to discriminate between wanted and unwanted signals.

Look up selectivity in Wiktionary, the free dictionary.

Selectivity may refer to:

• Selectivity (electronic), in radio transmission
• Functional selectivity, in pharmacology
• Socioemotional selectivity theory, in social psychology
• Reactivity–selectivity principle, in chemistry
• Stereoselectivity, in organic chemistry
• Natural selection, in biology
• Sensitivity and specificity, in statistical theory
• Discrimination, the ability to distinguish small differences
• Choice, making a selection among options

See also

• Select
• Selection

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