synsacrum

[ sin-sak-ruhm, -sey-kruhm ]

/ sɪnˈsæk rəm, -ˈseɪ krəm /

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noun, plural syn·sac·ra

[sin-sak-ruh, -sey-kruh]. /sɪnˈsæk rə, -ˈseɪ krə/. Ornithology.

a dorsal ridge of bone in the pelvic region of birds, formed by the fusion of certain thoracic, lumbar, sacral, and caudal vertebrae.

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of synsacrum

First recorded in 1900–05; syn- + sacrum

OTHER WORDS FROM synsacrum

syn·sa·cral, adjectivepre·syn·sa·cral, adjective

Words nearby synsacrum

synovial, synovial fluid, synovial membrane, synovitis, synroc, synsacrum, synsepalous, syntactic, syntactic construction, syntactics, syntagma