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sacrum

(sā′krəm, sak′rəm)

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

Origin: ModL < LL (os) sacrum, lit., sacred (bone), transl. of Gr hieron osteon < hieron, sacred, ? last (< hieros: see hiero-) + osteon: see ossify

See sacrum in American Heritage Dictionary 4

noun pl. sa·cra (sāˈkrə, săkˈrə)

A triangular bone made up of five fused vertebrae and forming the posterior section of the pelvis.

Origin:

Origin: New Latin

Origin: , from Late Latin (os) sacrum (translation of Greek hieron (osteon), sacred (bone))

Origin: , neuter of Latin sacer, sacred; see sacred

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