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sacrum
 sacrumsa·crum S0012500 (sā′krəm, săk′rəm)n. pl. sa·cra (sā′krə, săk′rə) A triangular bone made up of five fused vertebrae and forming the posterior section of the pelvis.
[New Latin, from Late Latin (os) sacrum, sacred (bone), sacrum (translation of Greek hieron (osteon), sacred (bone), so called from the use of the sacrum and coccyx of sacrificed animals in divination ), neuter of Latin sacer, sacred, holy; see sacred.]Word History: The human sacrum consists of five fused vertebrae, to which the coccyx or tailbone—the vestigial remnant of a tail—is attached. In Latin, this large bone was called os sacrum, literally "holy bone." (Os means "bone" in Latin, and sacrum is a form of the Latin adjective sacer, "holy," which is also the source of a number of other English words like sacred, sacrifice, and sacrilege.) The Latin term for the bone is in turn a translation of its Greek name, hieron osteon. (Hieron is a form of the Greek adjective hieros, "holy," while osteon means "bone" in Greek.) In ancient Greek animal sacrifices, certain portions of the victim were reserved for the gods, and among these was the sacrum with the tail still attached. After the gods' portions were placed in the sacrificial fire, a seer or diviner would often observe how the tail curled and sputtered in the flames, and he would interpret these signs as favorable or unfavorable. Greek representations of animal sacrifices on painted ceramics often show the tail curling in the fire and thus revealing the will of the gods.sacrum (ˈseɪkrəm; ˈsækrəm) n, pl -cra (-krə) 1. (Anatomy) (in man) the large wedge-shaped bone, consisting of five fused vertebrae, in the lower part of the back2. (Zoology) the corresponding part in some other vertebrates[C18: from Latin os sacrum holy bone, because it was used in sacrifices, from sacer holy]sac•rum (ˈsæk rəm, ˈseɪ krəm)
n., pl. sac•ra (ˈsæk rə, ˈseɪ krə) a bone between the lumbar vertebrae and tail vertebrae, composed of five fused vertebrae that form the posterior pelvic wall. [1745–55; < Late Latin (os) sacrum holy (bone)] sa·crum (sā′krəm, săk′rəm) A triangular bone at the base of the spine, above the coccyx (tailbone), that forms the rear section of the pelvis. In humans it is made up of five vertebrae that fuse together by adulthood. See more at skeleton.sacrumFive fused vertebrae joined to the two hip bones.Thesaurus| Noun | 1. |  sacrum - 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 coccyxbone, os - rigid connective tissue that makes up the skeleton of vertebratessacral vertebra - one of 5 vertebrae in the human spine that fuse in the adult to form the sacrumpelvic arch, pelvic girdle, pelvis, hip - the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates |
Translationssacrum
sacrum: see spinal columnspinal column,
bony column forming the main structural support of the skeleton of humans and other vertebrates, also known as the vertebral column or backbone. It consists of segments known as vertebrae linked by intervertebral disks and held together by ligaments.
..... Click the link for more information. .Sacrum in terrestrial vertebrate animals and in man, one or several vertebrae that provide a strong connection between the iliac bones of the pelvis and the axial skeleton. The sacrum was formed as a result of the progressive development of the posterior extremities and their important role in locomotion. True sacral vertebrae (on which, if only in the embryo, there are sacral ribs that subsequently grow together with the transverse processes of the vertebrae) are distinguished from those that enter into the composition of the sacrum secondarily in order to reinforce it. Present-day amphibians have one sacral vertebra, and reptiles have two (fossil forms often had more). In birds with two true sacral vertebrae, the anterior caudal, all the lumbar, and one or two of the last thoracic vertebrae are grown together to form a single bone, the synsacrum, out of ten or 12 vertebrae. In mammals, up to ten vertebrae are grown together in the sacrum; only one or two are true sacral vertebrae, and the rest are the anterior caudal vertebrae. When there is secondary disappearance of the posterior extremities (for example, in snakes and whales), the sacral region of the spine loses its function and is not differentiated. In humans the sacrum is formed of five vertebrae, which merge in adults into a single sacral bone (os sacrum), which posteriorly closes the pelvic girdle. V. B. SUKHANOV sacrum[′sak·rəm] (anatomy) A triangular bone, consisting in humans of five fused vertebrae, located below the last lumbar vertebra, above the coccyx, and between the hipbones. sacrum1. (in man) the large wedge-shaped bone, consisting of five fused vertebrae, in the lower part of the back 2. the corresponding part in some other vertebrates sacrum
sacrum [sa´krum] the triangular bone at the base of the spine formed by usually five fused vertebrae wedged dorsally between the two hip bones. See Appendix 3-3.sa·crum, pl. sa·cra (sā'krŭm, sā'kră), [TA] The segment of the vertebral column forming part of the pelvis; a broad, slightly curved, spade-shaped bone, thick above, thinner below, closing in the pelvic girdle posteriorly; it is formed by the fusion of five originally separate sacral vertebrae; it articulates with the last lumbar vertebra, the coccyx, and the hip bone on either side. Synonym(s): os sacrum [TA], sacred bone, vertebra magna [L. (lit. sacred bone), neuter of sacer (sacr-), sacred] sacrum (sā′krəm, săk′rəm)n. pl. sacra (sā′krə, săk′rə) A triangular bone made up of five fused vertebrae and forming the posterior section of the pelvis.sa·crum, pl. sacra (sā'krŭm, -kră) [TA] The segment of the vertebral column forming part of the pelvis; a broad, slightly curved, spade-shaped bone, thick above, thinner below, closing in the pelvic girdle posteriorly; it is formed by the fusion of five originally separate sacral vertebrae; it articulates with the last lumbar vertebra, the coccyx, and the hip bone on either side. [L. (lit. sacred bone), neuter of sacer (sacr-), sacred] SACRUM AND COCCYX: (ANTERIOR VIEW)sacrumS00-830360 (sa'krum) [L., sacred] The triangular bone situated dorsal and caudal from the two ilia between the fifth lumbar vertebra and the coccyx. It is formed of five united vertebrae and is wedged between the two innominate bones, its articulations forming the sacroiliac joints. It is the base of the vertebral column and, with the coccyx, forms the posterior boundary of the true pelvis. The male sacrum is narrower and more curved than the female sacrum. Synonym: sacral bone See: illustrationsacrum The large, triangular, wedge-like bone that forms the centre of the back of the PELVIS and the lower part of the vertebral column. The sacrum consists of five fused, broad vertebrae and terminates in the tail-like COCCYX.sacrum the collection of fused sacral vertebrae attached to the PELVIC GIRDLE.SacrumThe triangle-shaped bone located between the fifth lumbar vertebra and the coccyx that consists of five vertebrae fused together. The sacrum joins on each side with the bones of the pelvis.Mentioned in: Coccyx Injuries, Colon Cancer, Rectal Cancersacrum
Words related to sacrumnoun wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvisRelated Words- bone
- os
- sacral vertebra
- pelvic arch
- pelvic girdle
- pelvis
- hip
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