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sacra |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Sacrum \Sa"crum\, n.; pl {sacra}. [NL., fr L. sacer sacred, os sacrum the lowest bone of the spine.] (Anat.) That part of the vertebral column which is directly connected with or forms a part of the pelvis. Note: It may consist of a single vertebra or of several more or less consolidated. In man it forms the dorsal, or posterior, wall of the pelvis, and consists of five united vertebr[ae], which diminish in size very rapidly to the posterior extremity, which bears the coccyx.
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