- The definition of malignant is something evil or intending harm, a tumor that is spreading, or a disease that is invasive.
- An example of malignant is a plan to do you harm.
- An example of malignant is a cancerous tumor that is growing.
malignant definition by Webster's New World
- having an evil influence; malign
- wishing evil; very malevolent or malicious
- very harmful
- very dangerous or virulent; causing or likely to cause death; not benign; specif., cancerous
- Obsolete malcontent; rebellious; disaffected
Origin: Late Latin malignans (gen. malignantis), present participle of malignare: see malign
- malignantly adverb
malignant definition by American Heritage Dictionary
- Showing great malevolence; disposed to do evil.
- Highly injurious; pernicious.
- Pathology a. Threatening to life; virulent: a malignant disease.b. Tending to metastasize; cancerous. Used of a tumor.
- ma·ligˈnant·ly adverb
malignant - Cultural Definition
A descriptive term for things or conditions that threaten life or well-being. Malignant is the opposite of benign.
- The term malignant is used in describing cancerous tumors (see cancer) because such growths are a threat to the health of the individual.
- The term is often used in a general way to denote something that is both destructive and fast growing: “The malignant growth of the suburbs is destroying the landscape.”
malignant - Medical Definition
- Threatening to life, as a disease; virulent.
- Tending to metastasize; cancerous. Used of a tumor.
malignant - Science Definition
- Tending to have a destructive clinical course, as a malignant illness.
- Relating to cancer cells that are invasive and tend to metastasize. Malignant tumor cells are histologically more primitive than normal tissue. Compare benign.