serotype noun 1verb 1forms 3 noun1 •A group of microorganisms characterised by a specific set of antigens.An isolate from raw fish, serotype 0:6, unable to invade HeLa cells and negative for heat-stable enterotoxin, was clinically avirulent in this model and caused no lesions by histological examination. — 2012 verb1 •To assign or classify according to serotypes formsserotyped · serotyping · serotypes
