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: the part of the spinal column that is directly connected with or forms a part of the pelvis and in humans consists of five fused vertebrae
Examples of sacrum in a Sentence
Recent Examples on the Web
Lift your hips off the ground and place a block underneath your sacrum, the widest, boniest part of your pelvis.
—Cory Martin, Verywell Health, 16 Oct. 2024
The Connection Between Tailbone Pain and Sacroiliac Joint Pain
The two sacroiliac joints (one on either side of your lower spine) connect your sacrum (the bone that connects your spine to your pelvis) to your hip bone.
—Anna Giorgi, Verywell Health, 12 July 2024
Your tailbone is attached to the bottom of your sacrum.
—Anna Giorgi, Verywell Health, 12 July 2024
Ryan also suffered a fracture in her sacrum, at the junction where the spine connects to the pelvis, said another one of her surgeons, Andrew Mo.
—Ian Shapira, Washington Post, 29 Dec. 2023
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Word History
Etymology
New Latin, from Late Latin os sacrum last bone of the spine, literally, holy bone, translation of Greek hieron osteon
First Known Use
1753, in the meaning defined above
Dictionary Entries Near sacrum
Cite this Entry
“Sacrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sacrum. Accessed 28 Nov. 2024.
Kids Definition
Medical Definition
: the part of the spinal column that is directly connected with or forms a part of the pelvis by articulation with the ilia and that in humans forms the dorsal wall of the pelvis and consists of five fused vertebrae diminishing in size to the apex at the lower end which bears the coccyx
More from Merriam-Webster on sacrum
Britannica.com: Encyclopedia article about sacrum
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