malignant

malignant definition - medical

ma·lig·nant (mə-lĭgˈnənt)

adjective
  1. Threatening to life, as a disease; virulent.
  2. Tending to metastasize; cancerous. Used of a tumor.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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