Qualitative Concept
borderline Audio
bord·er·line [ bawr-der-lahyn ]
Definitions related to borderline:
  • Having a minor degree of severity that is considered to be on the boundary between the normal and the abnormal ranges. For quantitative traits, a deviation of that is less than two standard deviations from the appropriate population mean.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Straddling the dividing line between two categories.
    NCI
    U.S. National Cancer Institute, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.