The Collaborative International Dictionary
malignant neoplasm
malignant neoplasm \malignant neoplasm\ n. (Med.), Same as malignancy[4].
Syn: malignancy, malignance, malignant tumor, metastatic tumor.
WordNet
malignant neoplasm
n. a tumor that is malignant and tends to spread to other parts of the body [syn: malignant tumor, metastatic tumor]