Definition of Sacrum

1. Noun. 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.

Generic synonyms: Bone, Os
Terms within: Sacral Vertebra
Group relationships: Hip, Pelvic Arch, Pelvic Girdle, Pelvis
Derivative terms: Sacral

Definition of Sacrum

1. n. That part of the vertebral column which is directly connected with, or forms a part of, the pelvis.

Definition of Sacrum

1. Noun. (anatomy) A large triangular bone located at the base of the spine between the two hipbones of pelvis and formed from fused vertebrae. ¹

¹ Source:

Definition of Sacrum

1. a bone of the pelvis [n -CRA or -CRUMS]

Medical Definition of Sacrum

1. The triangular-shaped bone lying between the 5th lumbar vertebra and the coccyx (tailbone). It consists of 5 vertebrae fused together and it articulates on each side with the bones of the pelvis (ilium), forming the sacroiliac joints. (17 Dec 1997)

Sacrum Pictures

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Lexicographical Neighbors of Sacrum

sacrosciatic notch
sacrospinous ligament
sacrotransverse position
sacrotuberous ligament
sacrouterine fold
sacrovesical fold
sacrum (current term)
sad case
sad sack
sad sacks
sad to say

Literary usage of Sacrum

Below you will find example usage of this term as found in modern and/or classical literature:

1. Anatomy, Descriptive and Surgical by Henry Gray (1901)
"The Anterior Sacro-coccygeal Ligament consists of a few irregular fibres which descend from the anterior surface of the sacrum to the front of the coccyx, ..."

2. Classical Philology by University of Chicago press, JSTOR (Organization) (1909)
"from the locution "sacrum facere," with subsequent suppression ... sacrum 4. idem quod 1, verbo sacrum omisso : iNote the juxtaposition of sacrum and fecit. ..."

3. Medical Lexicon: A Dictionary of Medical Science : Containing a Concise by Robley Dunglison (1868)
"It is attached to the posterior surface of the sacrum ; to the corresponding portion of the crista ilii ; to the extremities of the transverse processes of ..."

4. Anatomy, Descriptive and Applied by Henry Gray (1913)
"The lower bands run to the base of the sacrum, blending with the ... Those connecting the sacrum and ilium. 2. Those passing between the sacrum and ischium. ..."

5. The Principles of Midwifery: Including the Diseases of Women and Children by John Burns (1843)
"When the sacrum is joined to the bone, this notch is made much more distinct. It is called the sacro- sciatic notch or arch, for one side is formed by the ..."

6. A Compendious system of midwifery: Chiefly Designed to Facilitate the by William Dewees (1853)
"The sacrum. 3. This bone has sometimes been called the false vertebra, because it is a ... The manner in which the sacrum is set into the ossa innominata, ..."

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