Neoplastic Process
tumor initiation Audio
tu·mor in·i·ti·a·tion [ too-mer ih-nih-shee-ay-shun ]
Definitions related to tumor initiation:
  • A process in which normal cells are changed so that they are able to form tumors. Substances that cause cancer can be tumor initiators.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • The first stage of tumor induction by a carcinogen, consisting of subtle alteration of cells by exposure to a carcinogenic agent so that they are likely to form a tumor upon subsequent exposure to a promoting agent.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
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