Family Group
sibling Audio
sib·ling [ sib-ling ]
Subclass of:
Nuclear Family; Persons
Etymology:
Diminutive of Anglo-Saxon sibb = relation
Definitions related to sibling:
  • A person's brother or sister who has the same parents.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • A person's brother or sister.
    NCI
    U.S. National Cancer Institute, 2021
  • One of two or more offspring of either sex from the same mother or father; includes sister, brother, half-sister, half-brother.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • One person who shares a parent or parents with another.
    NCI Health Level 7 Vocabulary
    U.S. National Cancer Institute, 2018
  • Persons or animals having at least one parent in common. (American College Dictionary, 3d ed)
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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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.