rituximab
noun
ri·tux·i·mab
| \ ri-ˈtək-si-ˌmab
\
\
Medical Definition of rituximab
: a genetically engineered monoclonal antibody that is administered by intravenous injection especially to treat non-Hodgkin lymphoma and chronic lymphocytic leukemia by binding to a receptor found on the surface of B cells and causing their lysis
Note: Rixtuximab is a chimeric monoclonal antibody prepared from humans and mice. It is marketed under the trademark Rituxan.