proteolysin
noun
pro·te·ol·y·sin
| \ ˌprōt-ē-ˈäl-ə-sən
, -ē-ə-ˈlīs-ᵊn
\
, -ē-ə-ˈlīs-ᵊn
\
Medical Definition of proteolysin
: a lysin (as an enzyme) producing proteolysis