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sacrums

Variant of sacrum

noun pl. sacra or sacrums

a thick, triangular bone situated near the lower end of the spinal column, where it joins both innominate bones to form the dorsal part of the pelvis: it is formed in humans of five fused vertebrae

Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.

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