wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx
A large triangular bone located at the base of the spine between the two hipbones of pelvis and formed from fused vertebrae.
Origin: From os sacer, translation of ἱερός ὀστέον. Called so either because supposedly sacrum was the part of an animal offered in sacrifice or because of the belief that the soul of the man resides there.
that part of the vertebral column which is directly connected with, or forms a part of, the pelvis
Origin: [NL., fr. L. sacer sacred, os sacrum the lowest bone of the spine.]
In humans, the sacrum is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones. Its upper part connects with the last lumbar vertebra, and bottom part with the coccyx. It consists of usually five initially unfused vertebrae which begin to fuse between ages 16–18 and are usually completely fused into a single bone by age 34. It is curved upon itself and placed obliquely. It is kyphotic—that is, concave facing forward. The base projects forward as the sacral promontory internally, and articulates with the last lumbar vertebra to form the prominent sacrovertebral angle. The central part is curved outward toward the posterior, allowing greater room for the pelvic cavity. The two lateral projections of the sacrum are called ala, and articulate with the ilium at the L-shaped sacroiliac joints.
Chambers 20th Century Dictionary
sā′krum, n. a triangular bone situated at the lower part of the vertebral column (of which it is a natural continuation), and wedged between the two innominate bones, so as to form the keystone to the pelvic arch.—adj. Sā′cral.—n. Sācral′gia, pain in the region of the sacrum.—adjs. Sācrocos′tal, connected with the sacrum and having the character of a rib (also n.); Sācroil′iac, pertaining to the sacrum and ilium; Sācrolum′bar, pertaining to sacral and lumbar vertebræ; Sācropū′bic, pertaining to the sacrum and to the pubes; Sācrorec′tal, pertaining to the sacrum and the rectum; Sācrosciat′ic, pertaining to the sacrum and the hip; Sācrover′tebral, pertaining to the sacrum and that part of the vertebral column immediately anterior to it. [L. sacrum (os, bone), sacred.]
The numerical value of sacrum in Chaldean Numerology is: 1
The numerical value of sacrum in Pythagorean Numerology is: 3
Sample Sentences & Example Usage
I have a tumor behind my skull. I have a tumor on my sacrum. I have one on my [cervical] spine somewhere, and on my liver and my lymph node and my left breast, it’s just hard. I just, I don’t want to die.
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