Temporal Concept
embryonic stage
em·bry·on·ic stage
Definitions related to embryonic stage:
  • A human life stage, during prenatal development, that begins at fertilization and typically continues until the end of eight weeks after fertilization, with full formation of the embryo.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Developmental stage from 4 to 8 weeks.
    Foundational Model of Anatomy
    University of Washington, 2017
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