Idea or Concept
precursor Audio
pre·cur·sor [ pri-kur-ser, pree-kur- ]
Definitions related to precursor:
  • A substance from which another substance is formed.
    NCI
    U.S. National Cancer Institute, 2021
  • A substance that the body can convert into the active form of a vitamin. One example is beta carotene, which the body can convert into vitamin A as needed.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
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