malignancy malignancy /məˈlɪgnənsi/

noun

1. () (medicine) a malignant state; progressive and resistant to treatment and tending to cause death  ( malignance , malignancy )
   (medicine) a malignant state; progressive and resistant to treatment and tending to cause death
   
2. Quality of being disposed to evil; intense ill will  ( malignance , malignancy , malignity )
   quality of being disposed to evil; intense ill will