sa·crum (s  kr m, s krm)n. pl. sa·cra (s kr, skr) A triangular bone made up of five fused vertebrae and forming the posterior section of the pelvis. [New Latin, from Late Latin (os) sacrum (translation of Greek hieron (osteon), sacred (bone)), neuter of Latin sacer, sacred; see sacred.] |   |
sacrum [ˈseɪkrəm ˈsækrəm]
n pl -cra [-krə]
1. (Life Sciences & Allied Applications / Anatomy) (in man) the large wedge-shaped bone, consisting of five fused vertebrae, in the lower part of the back
2. (Life Sciences & Allied Applications / Zoology) the corresponding part in some other vertebrates
[from Latin os sacrum holy bone, because it was used in sacrifices, from sacer holy]
| sacrum (skrm, skrm) Plural sacra 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. |  |
ThesaurusLegend: Synonyms Related Words Antonyms
| 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 coccyxsacral vertebra - one of 5 vertebrae in the human spine that fuse in the adult to form the sacrum pelvic 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 |
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