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synsacrum

noun
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syn·​sacrum | \ "+ \

Definition of synsacrum

: 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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History and Etymology for synsacrum

New Latin, from syn- + sacrum

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Cite this Entry

“Synsacrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/synsacrum. Accessed 23 Oct. 2021.

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