I. ˈsirəˌtīp, ˈser- noun
Etymology: sero- + type
: a group of intimately related microorganisms distinguished by the possession of a common set of antigens ; also : the antigen set characteristic of such a group
II. ˈsirəˌtīp, ˈser- transitive verb
Etymology: serotype , noun
: to determine the serotype of