Definition of sacrum

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sacrum

sa·crum

m, s

m) KEY

NOUN:
pl. sa·cra (s

, s

) KEY

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

ETYMOLOGY:
New Latin, from Late Latin (os) sacrum (translation of Greek hieron (osteon), sacred (bone)), neuter of Latin sacer, sacred ; see sacred

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