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sacrum

Pronunciation: sa'krum, sa'kra

Definition: 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 sacrumTA, sacred bone, vertebra magna

[L. (lit. sacred bone), neuter of sacer (sacr-), sacred]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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