noun (plural -cies) Date: 1601 the quality or state of being malignant, 2. exhibition (as by a tumor) of malignant qualities ; virulence , a malignant tumor
MALIGNANCY
Meaning of MALIGNANCY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012