Definition of Malignant

causing an extremely serious, possibly even fatal, issue

Examples of Malignant in a sentence

When the doctors discovered a malignant tumor in Sam’s brain, they told him he only had six months to live.  🔊

After the bombing, people had to wear masks to avoid inhaling the malignant fumes of the chemical agents.  🔊

Kim is having a biopsy today to see if the lump in her breast is malignant.  🔊

Crystal cried when she learned the tumor was malignant.  🔊

Hopefully the intravenous treatment will destroy the malignant cells so you can live a long and healthy life.  🔊

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