Idea or Concept
precursor
pre·cur·sor [ pri-kur-ser, pree-kur- ]
Definitions related to precursor:
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A substance from which another substance is formed.NCI ThesaurusU.S. National Cancer Institute, 2021
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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 TermsHarvard Medical Publishing, 2011
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