choriocarcinoma [kawr-ee-oh-kahr-suh-noh-muh, kohr-] Word Origin noun, plural cho·ri·o·car·ci·no·mas, cho·ri·o·car·ci·no·ma·ta [kawr-ee-oh-kahr-suh-noh-muh-tuh, kohr-] /ˌkɔr i oʊˌkɑr səˈnoʊ mə tə, ˌkoʊr-/. Pathology.
Origin of choriocarcinoma First recorded in 1900–05; chorio- + carcinoma choriocarcinoma in Medicine choriocarcinoma [kôr′ē-ō-kär′sə-nō′mə] n.
- A malignant tumor of syncytial trophoblasts and cytotrophoblasts, almost always occurring in the uterus.chorioepithelioma chorionic epithelioma trophoblastoma