Qualitative Concept
unknown Audio
un·known [ uhn-nohn ]
Definitions related to unknown:
  • A proper value is applicable, but not known.
    NCI Health Level 7 Vocabulary
    U.S. National Cancer Institute, 2018
  • Not known, not observed, not recorded, or refused.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
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