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1. (n.) sacrum
a bone between the lumbar vertebrae and tail vertebrae, composed of five fused vertebrae that form the posterior pelvic wall.
Etymology: (1745–55; < LL (os) sacrum holy (bone))
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| Definition of 'sacrum' |
Princeton's WordNet |
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1. (noun) 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 coccyx
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| Definition of 'sacrum' |
Webster Dictionary |
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1. (noun) sacrum
that part of the vertebral column which is directly connected with, or forms a part of, the pelvis
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