Hazardous or Poisonous Substance
mutagen Audio
mu·ta·gen [ myoo-tuh-juhn, -jen ]
Definitions related to mutagens:
  • Anything that causes a mutation (a change in the DNA of a cell). DNA changes caused by mutagens may harm cells and cause certain diseases, such as cancer. Examples of mutagens include radioactive substances, x-rays, ultraviolet radiation, and certain chemicals.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Chemical or physical agent that induces or increases genetic mutations by causing changes in DNA.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Chemical agents that increase the rate of genetic mutation by interfering with the function of nucleic acids. A clastogen is a specific mutagen that causes breaks in chromosomes.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.