noun syn·sacrum \"+\

Definition of synsacrum

  1. :  a solidly fused series of vertebrae in the pelvic region in birds, dinosaurs, and pterosaurs comprising usually the last rib-bearing or thoracic vertebra, the two sacral vertebrae, and a varying number of caudal vertebrae — compare sacrum

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Origin and Etymology of synsacrum

New Latin, from syn- + sacrum

Seen and Heard

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a brief usually trivial fact

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