sə̇ˌlekˈtivəd.ē, -vətē, -i also (ˌ)sēˌl- noun
( -es )
1. : the quality or state of being selective
circulation policy which stressed selectivity as opposed to mass sales — Current Biography
the selectivity of students in the technical institute — C.V.Newsom
newer insecticides … are tending toward a high degree of selectivity — Industrial & Engineering Chemistry
2.
a. : the state of possessing or exhibiting selective reflection
b. : a quantitative or qualitative measurement of the degree to which an electrical circuit or apparatus responds to a desired signal and rejects others