Early 18th century; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From either criminose or criminous + -ity: see -osity.
Definition of criminosity in US English:
criminosity
nounˌkrɪmɪˈnɒsɪti
rare
= criminousness.
Origin
Early 18th century; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From either criminose or criminous + -ity: see -osity.