ad·e·no·car·ci·no·ma (ād'n-ō-kär'sə-nō'mə) n. A malignant tumor originating in glandular tissue. ad'e·no·car'ci·nom'a·tous (-nŏm'ə-təs, -nō'mə-təs) adj.
adenocarcinoma ad·e·no·car·ci·no·ma (ād'n-ō-kär'sə-nō'mə) n. A malignant tumor originating in the epithelial cells of glandular tissue and forming glandular structures.