What does malignancy mean?
Malignancy is a formal word for harmful or malevolent quality, and in medicine it specifically names a cancerous tumour capable of invading nearby tissue or spreading elsewhere in the body. Outside medicine, the word is typically abstract: it can describe destructive tendencies in a person, a situation, or an institution. The expression “the malignancy of greed,” for example, suggests that greed is not merely unpleasant but actively harmful and capable of causing wider damage. In clinical writing, malignancy differs from cancer as a general category, because it focuses on the dangerous or invasive behaviour of a particular growth. The word’s strong negative connotation makes it especially effective when describing persistent danger, hostility, or destructive influence, while its medical sense is precise and technically important.
nounThe quality of being harmful, malevolent, or dangerous, especially when this quality is intense or persistent. In medicine, the term refers specifically to a cancerous or invasive tumour that can spread to surrounding tissues or distant parts of the body.
- The quality of being harmful, malevolent, or actively dangerous.
- A cancerous or invasive tumour, especially one that can spread to surrounding tissues or distant parts of the body.
"The doctor explained that the biopsy had confirmed the presence of a malignancy."
"The report warned that the unchecked spread of the disease represented a serious malignancy within the organization."
"Early detection can prevent a malignancy from developing into an advanced cancer."
The plural is used especially for separate cancerous growths or for multiple instances of a harmful condition.
"Several malignancies were detected during the follow-up examinations."
What is hidden can be more dangerous than what is visible: in medicine, malignancy begins with cells that acquire the ability to invade nearby tissue and spread.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does malignancy come from?
The English noun comes from Latin malignitas, a noun derived from malignus, meaning bad, harmful, or malicious. The same Latin root also underlies related English words such as malignant, malign, and malignity. In modern usage, the term retains both its general sense of active harmfulness and its specialized medical sense of an invasive cancer.
How malignancy is actually used
In medical contexts, malignancy is a technical term and usually refers to a cancer with the potential to invade nearby tissue or metastasize. In general contexts, it is formal and conveys persistent harmfulness, malevolence, or destructive power.