NCI Dictionary of Cancer Terms

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Dictionary of Cancer Terms features 7,863 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

DNA methyltransferase
(... MEH-thul-TRANZ-feh-rays)
An enzyme (a protein that speeds up chemical reactions in the body) that attaches methyl groups to DNA. A methyl group is a chemical group containing one carbon and three hydrogen atoms. Also called DNA methylase.