Anatomy
sacrum Audio
sac·rum [ sak-ruhm, sey-kruhm ]
Subclass of:
Vertebral column
Definitions related to bone structure of sacrum:
  • (sacrum) Bone complex which has as its direct parts five sacral vertebrae.
    Foundational Model of Anatomy
    University of Washington, 2017
  • (sacrum) Five fused VERTEBRAE forming a triangle-shaped structure at the back of the PELVIS. It articulates superiorly with the LUMBAR VERTEBRAE, inferiorly with the COCCYX, and anteriorly with the ILIUM of the PELVIS. The sacrum strengthens and stabilizes the PELVIS.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • (sacrum) The larger triangular bone at the base of the spine.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • (sacral bone) One of the five bones of the spine that fuse to create the sacrum.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Sacrum, wedge-shaped triangular bone at the base of the vertebral column, above the caudal (tail) vertebrae, or coccyx, that articulates (connects) with the pelvic girdle. In humans it is usually composed of five vertebrae, which fuse in early adulthood. The top of the first (uppermost) sacral...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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