Definition of infectability in US English:

infectability

noun

  • The condition or property of being infectable; susceptibility to infection or a particular infection; the degree to which an individual, species, type of cell, etc., is susceptible to (an) infection.

Origin

Late 19th century. From infectable + -ity: see -bility.

Pronunciation

infectability

/ɪnˌfɛktəˈbɪlɪti/